diff options
Diffstat (limited to 'drivers/usb')
143 files changed, 2645 insertions, 1452 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 8689dcba5201..2b9159a9ab4f 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -160,4 +160,25 @@ config USB_LED_TRIG LEDs and you want to use them as activity indicators for USB host or gadget. +config USB_ULPI_BUS + tristate "USB ULPI PHY interface support" + depends on USB_COMMON + help + UTMI+ Low Pin Interface (ULPI) is specification for a commonly used + USB 2.0 PHY interface. The ULPI specification defines a standard set + of registers that can be used to detect the vendor and product which + allows ULPI to be handled as a bus. This module is the driver for that + bus. + + The ULPI interfaces (the buses) are registered by the drivers for USB + controllers which support ULPI register access and have ULPI PHY + attached to them. The ULPI PHY drivers themselves are normal PHY + drivers. + + ULPI PHYs provide often functions such as ADP sensing/probing (OTG + protocol) and USB charger detection. + + To compile this driver as a module, choose M here: the module will + be called ulpi. + endif # USB_SUPPORT diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c index 0a866e90b49c..f9fe86b6f7b5 100644 --- a/drivers/usb/atm/cxacru.c +++ b/drivers/usb/atm/cxacru.c @@ -1139,10 +1139,8 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance, /* instance init */ instance = kzalloc(sizeof(*instance), GFP_KERNEL); - if (!instance) { - usb_dbg(usbatm_instance, "cxacru_bind: no memory for instance data\n"); + if (!instance) return -ENOMEM; - } instance->usbatm = usbatm_instance; instance->modem_type = (struct cxacru_modem_type *) id->driver_info; @@ -1168,13 +1166,11 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance, } instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL); if (!instance->rcv_urb) { - usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_urb\n"); ret = -ENOMEM; goto fail; } instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); if (!instance->snd_urb) { - usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_urb\n"); ret = -ENOMEM; goto fail; } diff --git a/drivers/usb/atm/speedtch.c b/drivers/usb/atm/speedtch.c index 0270d1312f83..5083eb5b0d5e 100644 --- a/drivers/usb/atm/speedtch.c +++ b/drivers/usb/atm/speedtch.c @@ -817,7 +817,6 @@ static int speedtch_bind(struct usbatm_data *usbatm, instance = kzalloc(sizeof(*instance), GFP_KERNEL); if (!instance) { - usb_err(usbatm, "%s: no memory for instance data!\n", __func__); ret = -ENOMEM; goto fail_release; } diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c index 4333dc576a12..df67815f74e6 100644 --- a/drivers/usb/atm/ueagle-atm.c +++ b/drivers/usb/atm/ueagle-atm.c @@ -2196,17 +2196,12 @@ static int uea_boot(struct uea_softc *sc) load_XILINX_firmware(sc); intr = kmalloc(size, GFP_KERNEL); - if (!intr) { - uea_err(INS_TO_USBDEV(sc), - "cannot allocate interrupt package\n"); + if (!intr) goto err0; - } sc->urb_int = usb_alloc_urb(0, GFP_KERNEL); - if (!sc->urb_int) { - uea_err(INS_TO_USBDEV(sc), "cannot allocate interrupt URB\n"); + if (!sc->urb_int) goto err1; - } usb_fill_int_urb(sc->urb_int, sc->usb_dev, usb_rcvintpipe(sc->usb_dev, UEA_INTR_PIPE), @@ -2561,10 +2556,8 @@ static int uea_bind(struct usbatm_data *usbatm, struct usb_interface *intf, } sc = kzalloc(sizeof(struct uea_softc), GFP_KERNEL); - if (!sc) { - uea_err(usb, "uea_init: not enough memory !\n"); + if (!sc) return -ENOMEM; - } sc->usb_dev = usb; usbatm->driver_data = sc; diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c index db322d9ccb6e..4dec9df8764b 100644 --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -819,7 +819,6 @@ static int usbatm_atm_open(struct atm_vcc *vcc) new = kzalloc(sizeof(struct usbatm_vcc_data), GFP_KERNEL); if (!new) { - atm_err(instance, "%s: no memory for vcc_data!\n", __func__); ret = -ENOMEM; goto fail; } @@ -1032,10 +1031,8 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, /* instance init */ instance = kzalloc(sizeof(*instance) + sizeof(struct urb *) * (num_rcv_urbs + num_snd_urbs), GFP_KERNEL); - if (!instance) { - dev_err(dev, "%s: no memory for instance data!\n", __func__); + if (!instance) return -ENOMEM; - } /* public fields */ @@ -1141,7 +1138,6 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, urb = usb_alloc_urb(iso_packets, GFP_KERNEL); if (!urb) { - dev_err(dev, "%s: no memory for urb %d!\n", __func__, i); error = -ENOMEM; goto fail_unbind; } @@ -1151,7 +1147,6 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, /* zero the tx padding to avoid leaking information */ buffer = kzalloc(channel->buf_size, GFP_KERNEL); if (!buffer) { - dev_err(dev, "%s: no memory for buffer %d!\n", __func__, i); error = -ENOMEM; goto fail_unbind; } @@ -1182,7 +1177,6 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, instance->cell_buf = kmalloc(instance->rx_channel.stride, GFP_KERNEL); if (!instance->cell_buf) { - dev_err(dev, "%s: no memory for cell buffer!\n", __func__); error = -ENOMEM; goto fail_unbind; } diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index dedc33e589f4..099179457f60 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -140,6 +140,9 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev) if (of_find_property(np, "disable-over-current", NULL)) data->disable_oc = 1; + if (of_find_property(np, "over-current-active-high", NULL)) + data->oc_polarity = 1; + if (of_find_property(np, "external-vbus-divider", NULL)) data->evdo = 1; diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h index 635717e9354a..409aa5ca8dda 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.h +++ b/drivers/usb/chipidea/ci_hdrc_imx.h @@ -17,6 +17,7 @@ struct imx_usbmisc_data { int index; unsigned int disable_oc:1; /* over current detect disabled */ + unsigned int oc_polarity:1; /* over current polarity if oc enabled */ unsigned int evdo:1; /* set external vbus divider option */ }; diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 053bac9d983c..96ae69502c86 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -81,12 +81,15 @@ static int ehci_ci_reset(struct usb_hcd *hcd) { struct device *dev = hcd->self.controller; struct ci_hdrc *ci = dev_get_drvdata(dev); + struct ehci_hcd *ehci = hcd_to_ehci(hcd); int ret; ret = ehci_setup(hcd); if (ret) return ret; + ehci->need_io_watchdog = 0; + ci_platform_configure(ci); return ret; diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 065f5d97aa67..661f43fe0f9e 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -59,7 +59,7 @@ ctrl_endpt_in_desc = { */ static inline int hw_ep_bit(int num, int dir) { - return num + (dir ? 16 : 0); + return num + ((dir == TX) ? 16 : 0); } static inline int ep_to_bit(struct ci_hdrc *ci, int n) @@ -121,9 +121,8 @@ static int hw_ep_flush(struct ci_hdrc *ci, int num, int dir) */ static int hw_ep_disable(struct ci_hdrc *ci, int num, int dir) { - hw_ep_flush(ci, num, dir); hw_write(ci, OP_ENDPTCTRL + num, - dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0); + (dir == TX) ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0); return 0; } @@ -139,7 +138,7 @@ static int hw_ep_enable(struct ci_hdrc *ci, int num, int dir, int type) { u32 mask, data; - if (dir) { + if (dir == TX) { mask = ENDPTCTRL_TXT; /* type */ data = type << __ffs(mask); @@ -171,7 +170,7 @@ static int hw_ep_enable(struct ci_hdrc *ci, int num, int dir, int type) */ static int hw_ep_get_halt(struct ci_hdrc *ci, int num, int dir) { - u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS; + u32 mask = (dir == TX) ? ENDPTCTRL_TXS : ENDPTCTRL_RXS; return hw_read(ci, OP_ENDPTCTRL + num, mask) ? 1 : 0; } @@ -188,6 +187,9 @@ static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl) { int n = hw_ep_bit(num, dir); + /* Synchronize before ep prime */ + wmb(); + if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num))) return -EAGAIN; @@ -218,8 +220,8 @@ static int hw_ep_set_halt(struct ci_hdrc *ci, int num, int dir, int value) do { enum ci_hw_regs reg = OP_ENDPTCTRL + num; - u32 mask_xs = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS; - u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR; + u32 mask_xs = (dir == TX) ? ENDPTCTRL_TXS : ENDPTCTRL_RXS; + u32 mask_xr = (dir == TX) ? ENDPTCTRL_TXR : ENDPTCTRL_RXR; /* data toggle - reserved for EP0 but it's in ESS */ hw_write(ci, reg, mask_xs|mask_xr, @@ -348,8 +350,7 @@ static int add_td_to_list(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq, if (node == NULL) return -ENOMEM; - node->ptr = dma_pool_zalloc(hwep->td_pool, GFP_ATOMIC, - &node->dma); + node->ptr = dma_pool_zalloc(hwep->td_pool, GFP_ATOMIC, &node->dma); if (node->ptr == NULL) { kfree(node); return -ENOMEM; @@ -506,8 +507,6 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq) hwep->qh.ptr->cap |= mul << __ffs(QH_MULT); } - wmb(); /* synchronize before ep prime */ - ret = hw_ep_prime(ci, hwep->num, hwep->dir, hwep->type == USB_ENDPOINT_XFER_CONTROL); done: @@ -534,9 +533,6 @@ static int reprime_dtd(struct ci_hdrc *ci, struct ci_hw_ep *hwep, hwep->qh.ptr->td.token &= cpu_to_le32(~(TD_STATUS_HALTED | TD_STATUS_ACTIVE)); - /* Synchronize before ep prime */ - wmb(); - return hw_ep_prime(ci, hwep->num, hwep->dir, hwep->type == USB_ENDPOINT_XFER_CONTROL); } @@ -590,7 +586,7 @@ static int _hardware_dequeue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq) } if (remaining_length) { - if (hwep->dir) { + if (hwep->dir == TX) { hwreq->req.status = -EPROTO; break; } @@ -949,6 +945,15 @@ static int isr_setup_status_phase(struct ci_hdrc *ci) int retval; struct ci_hw_ep *hwep; + /* + * Unexpected USB controller behavior, caused by bad signal integrity + * or ground reference problems, can lead to isr_setup_status_phase + * being called with ci->status equal to NULL. + * If this situation occurs, you should review your USB hardware design. + */ + if (WARN_ON_ONCE(!ci->status)) + return -EPIPE; + hwep = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in; ci->status->context = ci; ci->status->complete = isr_setup_status_complete; @@ -1042,9 +1047,9 @@ __acquires(ci->lock) if (req.wLength != 0) break; num = le16_to_cpu(req.wIndex); - dir = num & USB_ENDPOINT_DIR_MASK; + dir = (num & USB_ENDPOINT_DIR_MASK) ? TX : RX; num &= USB_ENDPOINT_NUMBER_MASK; - if (dir) /* TX */ + if (dir == TX) num += ci->hw_ep_max / 2; if (!ci->ci_hw_ep[num].wedge) { spin_unlock(&ci->lock); @@ -1094,9 +1099,9 @@ __acquires(ci->lock) if (req.wLength != 0) break; num = le16_to_cpu(req.wIndex); - dir = num & USB_ENDPOINT_DIR_MASK; + dir = (num & USB_ENDPOINT_DIR_MASK) ? TX : RX; num &= USB_ENDPOINT_NUMBER_MASK; - if (dir) /* TX */ + if (dir == TX) num += ci->hw_ep_max / 2; spin_unlock(&ci->lock); @@ -1596,8 +1601,11 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on) { struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget); - /* Data+ pullup controlled by OTG state machine in OTG fsm mode */ - if (ci_otg_is_fsm_mode(ci)) + /* + * Data+ pullup controlled by OTG state machine in OTG fsm mode; + * and don't touch Data+ in host mode for dual role config. + */ + if (ci_otg_is_fsm_mode(ci) || ci->role == CI_ROLE_HOST) return 0; pm_runtime_get_sync(&ci->gadget.dev); @@ -1668,12 +1676,10 @@ static int init_eps(struct ci_hdrc *ci) usb_ep_set_maxpacket_limit(&hwep->ep, (unsigned short)~0); INIT_LIST_HEAD(&hwep->qh.queue); - hwep->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL, - &hwep->qh.dma); + hwep->qh.ptr = dma_pool_zalloc(ci->qh_pool, GFP_KERNEL, + &hwep->qh.dma); if (hwep->qh.ptr == NULL) retval = -ENOMEM; - else - memset(hwep->qh.ptr, 0, sizeof(*hwep->qh.ptr)); /* * set up shorthands for ep0 out and in endpoints, @@ -1987,7 +1993,7 @@ int ci_hdrc_gadget_init(struct ci_hdrc *ci) if (!hw_read(ci, CAP_DCCPARAMS, DCCPARAMS_DC)) return -ENXIO; - rdrv = devm_kzalloc(ci->dev, sizeof(struct ci_role_driver), GFP_KERNEL); + rdrv = devm_kzalloc(ci->dev, sizeof(*rdrv), GFP_KERNEL); if (!rdrv) return -ENOMEM; diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index ab8b027e8cc8..20d02a5e418d 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -56,6 +56,7 @@ #define MX6_BM_NON_BURST_SETTING BIT(1) #define MX6_BM_OVER_CUR_DIS BIT(7) +#define MX6_BM_OVER_CUR_POLARITY BIT(8) #define MX6_BM_WAKEUP_ENABLE BIT(10) #define MX6_BM_ID_WAKEUP BIT(16) #define MX6_BM_VBUS_WAKEUP BIT(17) @@ -266,11 +267,14 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) spin_lock_irqsave(&usbmisc->lock, flags); + reg = readl(usbmisc->base + data->index * 4); if (data->disable_oc) { - reg = readl(usbmisc->base + data->index * 4); - writel(reg | MX6_BM_OVER_CUR_DIS, - usbmisc->base + data->index * 4); + reg |= MX6_BM_OVER_CUR_DIS; + } else if (data->oc_polarity == 1) { + /* High active */ + reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY); } + writel(reg, usbmisc->base + data->index * 4); /* SoC non-burst setting */ reg = readl(usbmisc->base + data->index * 4); @@ -365,10 +369,14 @@ static int usbmisc_imx7d_init(struct imx_usbmisc_data *data) return -EINVAL; spin_lock_irqsave(&usbmisc->lock, flags); + reg = readl(usbmisc->base); if (data->disable_oc) { - reg = readl(usbmisc->base); - writel(reg | MX6_BM_OVER_CUR_DIS, usbmisc->base); + reg |= MX6_BM_OVER_CUR_DIS; + } else if (data->oc_polarity == 1) { + /* High active */ + reg &= ~(MX6_BM_OVER_CUR_DIS | MX6_BM_OVER_CUR_POLARITY); } + writel(reg, usbmisc->base); reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK; @@ -492,6 +500,10 @@ static const struct of_device_id usbmisc_imx_dt_ids[] = { .compatible = "fsl,imx6ul-usbmisc", .data = &imx6sx_usbmisc_ops, }, + { + .compatible = "fsl,imx7d-usbmisc", + .data = &imx7d_usbmisc_ops, + }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids); diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 0f3f62e81e5b..15ffe389b86f 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -368,17 +368,17 @@ static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) if (!test_and_clear_bit(index, &acm->read_urbs_free)) return 0; - dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index); - res = usb_submit_urb(acm->read_urbs[index], mem_flags); if (res) { if (res != -EPERM) { dev_err(&acm->data->dev, - "%s - usb_submit_urb failed: %d\n", - __func__, res); + "urb %d failed submission with %d\n", + index, res); } set_bit(index, &acm->read_urbs_free); return res; + } else { + dev_vdbg(&acm->data->dev, "submitted urb %d\n", index); } return 0; @@ -415,8 +415,9 @@ static void acm_read_bulk_callback(struct urb *urb) unsigned long flags; int status = urb->status; - dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__, - rb->index, urb->actual_length); + dev_vdbg(&acm->data->dev, "got urb %d, len %d, status %d\n", + rb->index, urb->actual_length, + status); if (!acm->dev) { set_bit(rb->index, &acm->read_urbs_free); @@ -426,8 +427,6 @@ static void acm_read_bulk_callback(struct urb *urb) if (status) { set_bit(rb->index, &acm->read_urbs_free); - dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n", - __func__, status); if ((status != -ENOENT) || (urb->actual_length == 0)) return; } @@ -462,8 +461,7 @@ static void acm_write_bulk(struct urb *urb) int status = urb->status; if (status || (urb->actual_length != urb->transfer_buffer_length)) - dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n", - __func__, + dev_vdbg(&acm->data->dev, "wrote len %d/%d, status %d\n", urb->actual_length, urb->transfer_buffer_length, status); @@ -478,8 +476,6 @@ static void acm_softint(struct work_struct *work) { struct acm *acm = container_of(work, struct acm, work); - dev_vdbg(&acm->data->dev, "%s\n", __func__); - tty_port_tty_wakeup(&acm->port); } @@ -492,8 +488,6 @@ static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) struct acm *acm; int retval; - dev_dbg(tty->dev, "%s\n", __func__); - acm = acm_get_by_minor(tty->index); if (!acm) return -ENODEV; @@ -515,8 +509,6 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) { struct acm *acm = tty->driver_data; - dev_dbg(tty->dev, "%s\n", __func__); - return tty_port_open(&acm->port, tty, filp); } @@ -545,8 +537,6 @@ static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) int retval = -ENODEV; int i; - dev_dbg(&acm->control->dev, "%s\n", __func__); - mutex_lock(&acm->mutex); if (acm->disconnected) goto disconnected; @@ -607,8 +597,6 @@ static void acm_port_destruct(struct tty_port *port) { struct acm *acm = container_of(port, struct acm, port); - dev_dbg(&acm->control->dev, "%s\n", __func__); - acm_release_minor(acm); usb_put_intf(acm->control); kfree(acm->country_codes); @@ -622,8 +610,6 @@ static void acm_port_shutdown(struct tty_port *port) struct acm_wb *wb; int i; - dev_dbg(&acm->control->dev, "%s\n", __func__); - /* * Need to grab write_lock to prevent race with resume, but no need to * hold it due to the tty-port initialised flag. @@ -654,21 +640,21 @@ static void acm_port_shutdown(struct tty_port *port) static void acm_tty_cleanup(struct tty_struct *tty) { struct acm *acm = tty->driver_data; - dev_dbg(&acm->control->dev, "%s\n", __func__); + tty_port_put(&acm->port); } static void acm_tty_hangup(struct tty_struct *tty) { struct acm *acm = tty->driver_data; - dev_dbg(&acm->control->dev, "%s\n", __func__); + tty_port_hangup(&acm->port); } static void acm_tty_close(struct tty_struct *tty, struct file *filp) { struct acm *acm = tty->driver_data; - dev_dbg(&acm->control->dev, "%s\n", __func__); + tty_port_close(&acm->port, tty, filp); } @@ -684,7 +670,7 @@ static int acm_tty_write(struct tty_struct *tty, if (!count) return 0; - dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count); + dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count); spin_lock_irqsave(&acm->write_lock, flags); wbn = acm_wb_alloc(acm); @@ -701,7 +687,7 @@ static int acm_tty_write(struct tty_struct *tty, } count = (count > acm->writesize) ? acm->writesize : count; - dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count); + dev_vdbg(&acm->data->dev, "writing %d bytes\n", count); memcpy(wb->buf, buf, count); wb->len = count; @@ -1533,8 +1519,6 @@ static void stop_data_traffic(struct acm *acm) { int i; - dev_dbg(&acm->control->dev, "%s\n", __func__); - usb_kill_urb(acm->ctrlurb); for (i = 0; i < ACM_NW; i++) usb_kill_urb(acm->wb[i].urb); @@ -1551,8 +1535,6 @@ static void acm_disconnect(struct usb_interface *intf) struct tty_struct *tty; int i; - dev_dbg(&intf->dev, "%s\n", __func__); - /* sibling interface is already cleaning up */ if (!acm) return; diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 337948c42110..0a6369510f2d 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -58,6 +58,7 @@ MODULE_DEVICE_TABLE (usb, wdm_ids); #define WDM_SUSPENDING 8 #define WDM_RESETTING 9 #define WDM_OVERFLOW 10 +#define WDM_DRAIN_ON_OPEN 11 #define WDM_MAX 16 @@ -154,6 +155,9 @@ static void wdm_out_callback(struct urb *urb) wake_up(&desc->wait); } +/* forward declaration */ +static int service_outstanding_interrupt(struct wdm_device *desc); + static void wdm_in_callback(struct urb *urb) { struct wdm_device *desc = urb->context; @@ -167,18 +171,18 @@ static void wdm_in_callback(struct urb *urb) switch (status) { case -ENOENT: dev_dbg(&desc->intf->dev, - "nonzero urb status received: -ENOENT"); + "nonzero urb status received: -ENOENT\n"); goto skip_error; case -ECONNRESET: dev_dbg(&desc->intf->dev, - "nonzero urb status received: -ECONNRESET"); + "nonzero urb status received: -ECONNRESET\n"); goto skip_error; case -ESHUTDOWN: dev_dbg(&desc->intf->dev, - "nonzero urb status received: -ESHUTDOWN"); + "nonzero urb status received: -ESHUTDOWN\n"); goto skip_error; case -EPIPE: - dev_err(&desc->intf->dev, + dev_dbg(&desc->intf->dev, "nonzero urb status received: -EPIPE\n"); break; default: @@ -188,7 +192,13 @@ static void wdm_in_callback(struct urb *urb) } } - desc->rerr = status; + /* + * only set a new error if there is no previous error. + * Errors are only cleared during read/open + */ + if (desc->rerr == 0) + desc->rerr = status; + if (length + desc->length > desc->wMaxCommand) { /* The buffer would overflow */ set_bit(WDM_OVERFLOW, &desc->flags); @@ -200,10 +210,40 @@ static void wdm_in_callback(struct urb *urb) desc->reslength = length; } } + + /* + * Handling devices with the WDM_DRAIN_ON_OPEN flag set: + * If desc->resp_count is unset, then the urb was submitted + * without a prior notification. If the device returned any + * data, then this implies that it had messages queued without + * notifying us. Continue reading until that queue is flushed. + */ + if (!desc->resp_count) { + if (!length) { + /* do not propagate the expected -EPIPE */ + desc->rerr = 0; + goto unlock; + } + dev_dbg(&desc->intf->dev, "got %d bytes without notification\n", length); + set_bit(WDM_RESPONDING, &desc->flags); + usb_submit_urb(desc->response, GFP_ATOMIC); + } + skip_error: + set_bit(WDM_READ, &desc->flags); wake_up(&desc->wait); - set_bit(WDM_READ, &desc->flags); + if (desc->rerr) { + /* + * Since there was an error, userspace may decide to not read + * any data after poll'ing. + * We should respond to further attempts from the device to send + * data, so that we can get unstuck. + */ + service_outstanding_interrupt(desc); + } + +unlock: spin_unlock(&desc->iuspin); } @@ -244,18 +284,18 @@ static void wdm_int_callback(struct urb *urb) switch (dr->bNotificationType) { case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: dev_dbg(&desc->intf->dev, - "NOTIFY_RESPONSE_AVAILABLE received: index %d len %d", + "NOTIFY_RESPONSE_AVAILABLE received: index %d len %d\n", le16_to_cpu(dr->wIndex), le16_to_cpu(dr->wLength)); break; case USB_CDC_NOTIFY_NETWORK_CONNECTION: dev_dbg(&desc->intf->dev, - "NOTIFY_NETWORK_CONNECTION %s network", + "NOTIFY_NETWORK_CONNECTION %s network\n", dr->wValue ? "connected to" : "disconnected from"); goto exit; case USB_CDC_NOTIFY_SPEED_CHANGE: - dev_dbg(&desc->intf->dev, "SPEED_CHANGE received (len %u)", + dev_dbg(&desc->intf->dev, "SPEED_CHANGE received (len %u)\n", urb->actual_length); goto exit; default: @@ -274,8 +314,7 @@ static void wdm_int_callback(struct urb *urb) && !test_bit(WDM_DISCONNECTING, &desc->flags) && !test_bit(WDM_SUSPENDING, &desc->flags)) { rv = usb_submit_urb(desc->response, GFP_ATOMIC); - dev_dbg(&desc->intf->dev, "%s: usb_submit_urb %d", - __func__, rv); + dev_dbg(&desc->intf->dev, "submit response URB %d\n", rv); } spin_unlock(&desc->iuspin); if (rv < 0) { @@ -417,7 +456,7 @@ static ssize_t wdm_write rv = usb_translate_errors(rv); goto out_free_mem_pm; } else { - dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d", + dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d\n", le16_to_cpu(req->wIndex)); } @@ -436,17 +475,14 @@ out_free_mem: } /* - * clear WDM_READ flag and possibly submit the read urb if resp_count - * is non-zero. + * Submit the read urb if resp_count is non-zero. * * Called with desc->iuspin locked */ -static int clear_wdm_read_flag(struct wdm_device *desc) +static int service_outstanding_interrupt(struct wdm_device *desc) { int rv = 0; - clear_bit(WDM_READ, &desc->flags); - /* submit read urb only if the device is waiting for it */ if (!desc->resp_count || !--desc->resp_count) goto out; @@ -537,8 +573,9 @@ retry: } if (!desc->reslength) { /* zero length read */ - dev_dbg(&desc->intf->dev, "%s: zero length - clearing WDM_READ\n", __func__); - rv = clear_wdm_read_flag(desc); + dev_dbg(&desc->intf->dev, "zero length - clearing WDM_READ\n"); + clear_bit(WDM_READ, &desc->flags); + rv = service_outstanding_interrupt(desc); spin_unlock_irq(&desc->iuspin); if (rv < 0) goto err; @@ -563,8 +600,10 @@ retry: desc->length -= cntr; /* in case we had outstanding data */ - if (!desc->length) - clear_wdm_read_flag(desc); + if (!desc->length) { + clear_bit(WDM_READ, &desc->flags); + service_outstanding_interrupt(desc); + } spin_unlock_irq(&desc->iuspin); rv = cntr; @@ -647,6 +686,17 @@ static int wdm_open(struct inode *inode, struct file *file) dev_err(&desc->intf->dev, "Error submitting int urb - %d\n", rv); rv = usb_translate_errors(rv); + } else if (test_bit(WDM_DRAIN_ON_OPEN, &desc->flags)) { + /* + * Some devices keep pending messages queued + * without resending notifications. We must + * flush the message queue before we can + * assume a one-to-one relationship between + * notifications and messages in the queue + */ + dev_dbg(&desc->intf->dev, "draining queued data\n"); + set_bit(WDM_RESPONDING, &desc->flags); + rv = usb_submit_urb(desc->response, GFP_KERNEL); } } else { rv = 0; @@ -673,7 +723,7 @@ static int wdm_release(struct inode *inode, struct file *file) if (!desc->count) { if (!test_bit(WDM_DISCONNECTING, &desc->flags)) { - dev_dbg(&desc->intf->dev, "wdm_release: cleanup"); + dev_dbg(&desc->intf->dev, "wdm_release: cleanup\n"); kill_urbs(desc); spin_lock_irq(&desc->iuspin); desc->resp_count = 0; @@ -753,7 +803,8 @@ static void wdm_rxwork(struct work_struct *work) /* --- hotplug --- */ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor *ep, - u16 bufsize, int (*manage_power)(struct usb_interface *, int)) + u16 bufsize, int (*manage_power)(struct usb_interface *, int), + bool drain_on_open) { int rv = -ENOMEM; struct wdm_device *desc; @@ -840,6 +891,68 @@ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor desc->manage_power = manage_power; + /* + * "drain_on_open" enables a hack to work around a firmware + * issue observed on network functions, in particular MBIM + * functions. + * + * Quoting section 7 of the CDC-WMC r1.1 specification: + * + * "The firmware shall interpret GetEncapsulatedResponse as a + * request to read response bytes. The firmware shall send + * the next wLength bytes from the response. The firmware + * shall allow the host to retrieve data using any number of + * GetEncapsulatedResponse requests. The firmware shall + * return a zero- length reply if there are no data bytes + * available. + * + * The firmware shall send ResponseAvailable notifications + * periodically, using any appropriate algorithm, to inform + * the host that there is data available in the reply + * buffer. The firmware is allowed to send ResponseAvailable + * notifications even if there is no data available, but + * this will obviously reduce overall performance." + * + * These requirements, although they make equally sense, are + * often not implemented by network functions. Some firmwares + * will queue data indefinitely, without ever resending a + * notification. The result is that the driver and firmware + * loses "syncronization" if the driver ever fails to respond + * to a single notification, something which easily can happen + * on release(). When this happens, the driver will appear to + * never receive notifications for the most current data. Each + * notification will only cause a single read, which returns + * the oldest data in the firmware's queue. + * + * The "drain_on_open" hack resolves the situation by draining + * data from the firmware until none is returned, without a + * prior notification. + * + * This will inevitably race with the firmware, risking that + * we read data from the device before handling the associated + * notification. To make things worse, some of the devices + * needing the hack do not implement the "return zero if no + * data is available" requirement either. Instead they return + * an error on the subsequent read in this case. This means + * that "winning" the race can cause an unexpected EIO to + * userspace. + * + * "winning" the race is more likely on resume() than on + * open(), and the unexpected error is more harmful in the + * middle of an open session. The hack is therefore only + * applied on open(), and not on resume() where it logically + * would be equally necessary. So we define open() as the only + * driver <-> device "syncronization point". Should we happen + * to lose a notification after open(), then syncronization + * will be lost until release() + * + * The hack should not be enabled for CDC WDM devices + * conforming to the CDC-WMC r1.1 specification. This is + * ensured by setting drain_on_open to false in wdm_probe(). + */ + if (drain_on_open) + set_bit(WDM_DRAIN_ON_OPEN, &desc->flags); + spin_lock(&wdm_device_list_lock); list_add(&desc->device_list, &wdm_device_list); spin_unlock(&wdm_device_list_lock); @@ -893,7 +1006,7 @@ static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id) goto err; ep = &iface->endpoint[0].desc; - rv = wdm_create(intf, ep, maxcom, &wdm_manage_power); + rv = wdm_create(intf, ep, maxcom, &wdm_manage_power, false); err: return rv; @@ -925,7 +1038,7 @@ struct usb_driver *usb_cdc_wdm_register(struct usb_interface *intf, { int rv = -EINVAL; - rv = wdm_create(intf, ep, bufsize, manage_power); + rv = wdm_create(intf, ep, bufsize, manage_power, true); if (rv < 0) goto err; @@ -967,7 +1080,7 @@ static void wdm_disconnect(struct usb_interface *intf) if (!desc->count) cleanup(desc); else - dev_dbg(&intf->dev, "%s: %d open files - postponing cleanup\n", __func__, desc->count); + dev_dbg(&intf->dev, "%d open files - postponing cleanup\n", desc->count); mutex_unlock(&wdm_mutex); } diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 917a55c4480d..da4f2509f567 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -1467,10 +1467,8 @@ static int usbtmc_probe(struct usb_interface *intf, if (data->iin_ep_present) { /* allocate int urb */ data->iin_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!data->iin_urb) { - dev_err(&intf->dev, "Failed to allocate int urb\n"); + if (!data->iin_urb) goto error_register; - } /* will reference data in int urb */ kref_get(&data->kref); @@ -1478,10 +1476,8 @@ static int usbtmc_probe(struct usb_interface *intf, /* allocate buffer for interrupt in */ data->iin_buffer = kmalloc(data->iin_wMaxPacketSize, GFP_KERNEL); - if (!data->iin_buffer) { - dev_err(&intf->dev, "Failed to allocate int buf\n"); + if (!data->iin_buffer) goto error_register; - } /* fill interrupt urb */ usb_fill_int_urb(data->iin_urb, data->usb_dev, diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c index 01c0c0477a9e..8b317702d761 100644 --- a/drivers/usb/common/ulpi.c +++ b/drivers/usb/common/ulpi.c @@ -21,13 +21,13 @@ int ulpi_read(struct ulpi *ulpi, u8 addr) { - return ulpi->ops->read(ulpi->ops, addr); + return ulpi->ops->read(ulpi->dev.parent, addr); } EXPORT_SYMBOL_GPL(ulpi_read); int ulpi_write(struct ulpi *ulpi, u8 addr, u8 val) { - return ulpi->ops->write(ulpi->ops, addr, val); + return ulpi->ops->write(ulpi->dev.parent, addr, val); } EXPORT_SYMBOL_GPL(ulpi_write); @@ -127,16 +127,17 @@ static struct device_type ulpi_dev_type = { * * Registers a driver with the ULPI bus. */ -int ulpi_register_driver(struct ulpi_driver *drv) +int __ulpi_register_driver(struct ulpi_driver *drv, struct module *module) { if (!drv->probe) return -EINVAL; + drv->driver.owner = module; drv->driver.bus = &ulpi_bus; return driver_register(&drv->driver); } -EXPORT_SYMBOL_GPL(ulpi_register_driver); +EXPORT_SYMBOL_GPL(__ulpi_register_driver); /** * ulpi_unregister_driver - unregister a driver with the ULPI bus @@ -156,6 +157,8 @@ static int ulpi_register(struct device *dev, struct ulpi *ulpi) { int ret; + ulpi->dev.parent = dev; /* needed early for ops */ + /* Test the interface */ ret = ulpi_write(ulpi, ULPI_SCRATCH, 0xaa); if (ret < 0) @@ -174,7 +177,6 @@ static int ulpi_register(struct device *dev, struct ulpi *ulpi) ulpi->id.product = ulpi_read(ulpi, ULPI_PRODUCT_ID_LOW); ulpi->id.product |= ulpi_read(ulpi, ULPI_PRODUCT_ID_HIGH) << 8; - ulpi->dev.parent = dev; ulpi->dev.bus = &ulpi_bus; ulpi->dev.type = &ulpi_dev_type; dev_set_name(&ulpi->dev, "%s.ulpi", dev_name(dev)); @@ -201,7 +203,8 @@ static int ulpi_register(struct device *dev, struct ulpi *ulpi) * Allocates and registers a ULPI device and an interface for it. Called from * the USB controller that provides the ULPI interface. */ -struct ulpi *ulpi_register_interface(struct device *dev, struct ulpi_ops *ops) +struct ulpi *ulpi_register_interface(struct device *dev, + const struct ulpi_ops *ops) { struct ulpi *ulpi; int ret; @@ -211,7 +214,6 @@ struct ulpi *ulpi_register_interface(struct device *dev, struct ulpi_ops *ops) return ERR_PTR(-ENOMEM); ulpi->ops = ops; - ops->dev = dev; ret = ulpi_register(dev, ulpi); if (ret) { diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig index dd280108758f..d6e43ce96799 100644 --- a/drivers/usb/core/Kconfig +++ b/drivers/usb/core/Kconfig @@ -82,24 +82,3 @@ config USB_OTG_FSM help Implements OTG Finite State Machine as specified in On-The-Go and Embedded Host Supplement to the USB Revision 2.0 Specification. - -config USB_ULPI_BUS - tristate "USB ULPI PHY interface support" - depends on USB_SUPPORT - help - UTMI+ Low Pin Interface (ULPI) is specification for a commonly used - USB 2.0 PHY interface. The ULPI specification defines a standard set - of registers that can be used to detect the vendor and product which - allows ULPI to be handled as a bus. This module is the driver for that - bus. - - The ULPI interfaces (the buses) are registered by the drivers for USB - controllers which support ULPI register access and have ULPI PHY - attached to them. The ULPI PHY drivers themselves are normal PHY - drivers. - - ULPI PHYs provide often functions such as ADP sensing/probing (OTG - protocol) and USB charger detection. - - To compile this driver as a module, choose M here: the module will - be called ulpi. diff --git a/drivers/usb/core/Makefile b/drivers/usb/core/Makefile index 9780877010b4..da36b784a0ef 100644 --- a/drivers/usb/core/Makefile +++ b/drivers/usb/core/Makefile @@ -5,8 +5,9 @@ usbcore-y := usb.o hub.o hcd.o urb.o message.o driver.o usbcore-y += config.o file.o buffer.o sysfs.o endpoint.o usbcore-y += devio.o notify.o generic.o quirks.o devices.o -usbcore-y += port.o of.o +usbcore-y += port.o +usbcore-$(CONFIG_OF) += of.o usbcore-$(CONFIG_PCI) += hcd-pci.o usbcore-$(CONFIG_ACPI) += usb-acpi.o diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 051163189810..15ce4ab11688 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -187,7 +187,7 @@ static const unsigned short high_speed_maxpacket_maxes[4] = { [USB_ENDPOINT_XFER_CONTROL] = 64, [USB_ENDPOINT_XFER_ISOC] = 1024, [USB_ENDPOINT_XFER_BULK] = 512, - [USB_ENDPOINT_XFER_INT] = 1023, + [USB_ENDPOINT_XFER_INT] = 1024, }; static const unsigned short super_speed_maxpacket_maxes[4] = { [USB_ENDPOINT_XFER_CONTROL] = 512, diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index e6a6d67c8705..09c8d9ca61ae 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -1709,11 +1709,17 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb as->urb->start_frame = uurb->start_frame; as->urb->number_of_packets = number_of_packets; as->urb->stream_id = stream_id; - if (uurb->type == USBDEVFS_URB_TYPE_ISO || - ps->dev->speed == USB_SPEED_HIGH) - as->urb->interval = 1 << min(15, ep->desc.bInterval - 1); - else - as->urb->interval = ep->desc.bInterval; + + if (ep->desc.bInterval) { + if (uurb->type == USBDEVFS_URB_TYPE_ISO || + ps->dev->speed == USB_SPEED_HIGH || + ps->dev->speed >= USB_SPEED_SUPER) + as->urb->interval = 1 << + min(15, ep->desc.bInterval - 1); + else + as->urb->interval = ep->desc.bInterval; + } + as->urb->context = as; as->urb->complete = async_completed; for (totlen = u = 0; u < number_of_packets; u++) { diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index d2e3f655c26f..746c47d86cf5 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2517,10 +2517,8 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver, struct usb_hcd *hcd; hcd = kzalloc(sizeof(*hcd) + driver->hcd_priv_size, GFP_KERNEL); - if (!hcd) { - dev_dbg (dev, "hcd alloc failed\n"); + if (!hcd) return NULL; - } if (primary_hcd == NULL) { hcd->address0_mutex = kmalloc(sizeof(*hcd->address0_mutex), GFP_KERNEL); @@ -3033,7 +3031,7 @@ EXPORT_SYMBOL_GPL(usb_hcd_platform_shutdown); /*-------------------------------------------------------------------------*/ -#if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE) +#if IS_ENABLED(CONFIG_USB_MON) const struct usb_mon_operations *mon_ops; diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 1d5fc32d06d0..b48dc76385b6 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1823,10 +1823,8 @@ descriptor_error: dev_info(&intf->dev, "USB hub found\n"); hub = kzalloc(sizeof(*hub), GFP_KERNEL); - if (!hub) { - dev_dbg(&intf->dev, "couldn't kmalloc hub struct\n"); + if (!hub) return -ENOMEM; - } kref_init(&hub->kref); hub->intfdev = &intf->dev; @@ -5337,11 +5335,10 @@ static int descriptors_changed(struct usb_device *udev, } buf = kmalloc(len, GFP_NOIO); - if (buf == NULL) { - dev_err(&udev->dev, "no mem to re-read configs after reset\n"); + if (!buf) /* assume the worst */ return 1; - } + for (index = 0; index < udev->descriptor.bNumConfigurations; index++) { old_length = le16_to_cpu(udev->config[index].desc.wTotalLength); length = usb_get_descriptor(udev, USB_DT_CONFIG, index, buf, diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 0406a59f0551..3a4707746157 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1760,17 +1760,14 @@ int usb_set_configuration(struct usb_device *dev, int configuration) nintf = cp->desc.bNumInterfaces; new_interfaces = kmalloc(nintf * sizeof(*new_interfaces), GFP_NOIO); - if (!new_interfaces) { - dev_err(&dev->dev, "Out of memory\n"); + if (!new_interfaces) return -ENOMEM; - } for (; n < nintf; ++n) { new_interfaces[n] = kzalloc( sizeof(struct usb_interface), GFP_NOIO); if (!new_interfaces[n]) { - dev_err(&dev->dev, "Out of memory\n"); ret = -ENOMEM; free_interfaces: while (--n >= 0) @@ -1862,7 +1859,12 @@ free_interfaces: intf->dev.bus = &usb_bus_type; intf->dev.type = &usb_if_device_type; intf->dev.groups = usb_interface_groups; + /* + * Please refer to usb_alloc_dev() to see why we set + * dma_mask and dma_pfn_offset. + */ intf->dev.dma_mask = dev->dev.dma_mask; + intf->dev.dma_pfn_offset = dev->dev.dma_pfn_offset; INIT_WORK(&intf->reset_ws, __usb_queue_reset_device); intf->minor = -1; device_initialize(&intf->dev); diff --git a/drivers/usb/core/of.c b/drivers/usb/core/of.c index 2289700c31d6..3de4f8873984 100644 --- a/drivers/usb/core/of.c +++ b/drivers/usb/core/of.c @@ -18,6 +18,7 @@ */ #include <linux/of.h> +#include <linux/usb/of.h> /** * usb_of_get_child_node - Find the device node match port number diff --git a/drivers/usb/core/otg_whitelist.h b/drivers/usb/core/otg_whitelist.h index a95b0c989c21..085049d37d7a 100644 --- a/drivers/usb/core/otg_whitelist.h +++ b/drivers/usb/core/otg_whitelist.h @@ -38,7 +38,7 @@ static struct usb_device_id whitelist_table[] = { { USB_DEVICE(0x0525, 0xa4a2), }, #endif -#if defined(CONFIG_USB_TEST) || defined(CONFIG_USB_TEST_MODULE) +#if IS_ENABLED(CONFIG_USB_TEST) /* gadget zero, for testing */ { USB_DEVICE(0x0525, 0xa4a0), }, #endif diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index c601e25b609f..a9039696476e 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -68,10 +68,8 @@ struct urb *usb_alloc_urb(int iso_packets, gfp_t mem_flags) urb = kmalloc(sizeof(struct urb) + iso_packets * sizeof(struct usb_iso_packet_descriptor), mem_flags); - if (!urb) { - printk(KERN_ERR "alloc_urb: kmalloc failed\n"); + if (!urb) return NULL; - } usb_init_urb(urb); return urb; } diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 5e80697ef952..592151461017 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -440,7 +440,18 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, dev->dev.bus = &usb_bus_type; dev->dev.type = &usb_device_type; dev->dev.groups = usb_device_groups; + /* + * Fake a dma_mask/offset for the USB device: + * We cannot really use the dma-mapping API (dma_alloc_* and + * dma_map_*) for USB devices but instead need to use + * usb_alloc_coherent and pass data in 'urb's, but some subsystems + * manually look into the mask/offset pair to determine whether + * they need bounce buffers. + * Note: calling dma_set_mask() on a USB device would set the + * mask for the entire HCD, so don't do that. + */ dev->dev.dma_mask = bus->controller->dma_mask; + dev->dev.dma_pfn_offset = bus->controller->dma_pfn_offset; set_dev_node(&dev->dev, dev_to_node(bus->controller)); dev->state = USB_STATE_ATTACHED; dev->lpm_disable_count = 1; diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 4135a5ff67ca..fa9b26b91507 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -238,6 +238,77 @@ int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg) return ret; } +/** + * dwc2_wait_for_mode() - Waits for the controller mode. + * @hsotg: Programming view of the DWC_otg controller. + * @host_mode: If true, waits for host mode, otherwise device mode. + */ +static void dwc2_wait_for_mode(struct dwc2_hsotg *hsotg, + bool host_mode) +{ + ktime_t start; + ktime_t end; + unsigned int timeout = 110; + + dev_vdbg(hsotg->dev, "Waiting for %s mode\n", + host_mode ? "host" : "device"); + + start = ktime_get(); + + while (1) { + s64 ms; + + if (dwc2_is_host_mode(hsotg) == host_mode) { + dev_vdbg(hsotg->dev, "%s mode set\n", + host_mode ? "Host" : "Device"); + break; + } + + end = ktime_get(); + ms = ktime_to_ms(ktime_sub(end, start)); + + if (ms >= (s64)timeout) { + dev_warn(hsotg->dev, "%s: Couldn't set %s mode\n", + __func__, host_mode ? "host" : "device"); + break; + } + + usleep_range(1000, 2000); + } +} + +/** + * dwc2_iddig_filter_enabled() - Returns true if the IDDIG debounce + * filter is enabled. + */ +static bool dwc2_iddig_filter_enabled(struct dwc2_hsotg *hsotg) +{ + u32 gsnpsid; + u32 ghwcfg4; + + if (!dwc2_hw_is_otg(hsotg)) + return false; + + /* Check if core configuration includes the IDDIG filter. */ + ghwcfg4 = dwc2_readl(hsotg->regs + GHWCFG4); + if (!(ghwcfg4 & GHWCFG4_IDDIG_FILT_EN)) + return false; + + /* + * Check if the IDDIG debounce filter is bypassed. Available + * in core version >= 3.10a. + */ + gsnpsid = dwc2_readl(hsotg->regs + GSNPSID); + if (gsnpsid >= DWC2_CORE_REV_3_10a) { + u32 gotgctl = dwc2_readl(hsotg->regs + GOTGCTL); + + if (gotgctl & GOTGCTL_DBNCE_FLTR_BYPASS) + return false; + } + + return true; +} + /* * Do core a soft reset of the core. Be careful with this because it * resets all the internal state machines of the core. @@ -246,9 +317,30 @@ int dwc2_core_reset(struct dwc2_hsotg *hsotg) { u32 greset; int count = 0; + bool wait_for_host_mode = false; dev_vdbg(hsotg->dev, "%s()\n", __func__); + /* + * If the current mode is host, either due to the force mode + * bit being set (which persists after core reset) or the + * connector id pin, a core soft reset will temporarily reset + * the mode to device. A delay from the IDDIG debounce filter + * will occur before going back to host mode. + * + * Determine whether we will go back into host mode after a + * reset and account for this delay after the reset. + */ + if (dwc2_iddig_filter_enabled(hsotg)) { + u32 gotgctl = dwc2_readl(hsotg->regs + GOTGCTL); + u32 gusbcfg = dwc2_readl(hsotg->regs + GUSBCFG); + + if (!(gotgctl & GOTGCTL_CONID_B) || + (gusbcfg & GUSBCFG_FORCEHOSTMODE)) { + wait_for_host_mode = true; + } + } + /* Core Soft Reset */ greset = dwc2_readl(hsotg->regs + GRSTCTL); greset |= GRSTCTL_CSFTRST; @@ -277,6 +369,9 @@ int dwc2_core_reset(struct dwc2_hsotg *hsotg) } } while (!(greset & GRSTCTL_AHBIDLE)); + if (wait_for_host_mode) + dwc2_wait_for_mode(hsotg, true); + return 0; } @@ -300,9 +395,9 @@ int dwc2_core_reset(struct dwc2_hsotg *hsotg) * Checks are done in this function to determine whether doing a force * would be valid or not. * - * If a force is done, it requires a 25ms delay to take effect. - * - * Returns true if the mode was forced. + * If a force is done, it requires a IDDIG debounce filter delay if + * the filter is configured and enabled. We poll the current mode of + * the controller to account for this delay. */ static bool dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host) { @@ -337,12 +432,18 @@ static bool dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host) gusbcfg |= set; dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG); - msleep(25); + dwc2_wait_for_mode(hsotg, host); return true; } -/* - * Clears the force mode bits. +/** + * dwc2_clear_force_mode() - Clears the force mode bits. + * + * After clearing the bits, wait up to 100 ms to account for any + * potential IDDIG filter delay. We can't know if we expect this delay + * or not because the value of the connector ID status is affected by + * the force mode. We only need to call this once during probe if + * dr_mode == OTG. */ static void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg) { @@ -353,11 +454,8 @@ static void dwc2_clear_force_mode(struct dwc2_hsotg *hsotg) gusbcfg &= ~GUSBCFG_FORCEDEVMODE; dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG); - /* - * NOTE: This long sleep is _very_ important, otherwise the core will - * not stay in host mode after a connector ID change! - */ - msleep(25); + if (dwc2_iddig_filter_enabled(hsotg)) + usleep_range(100000, 110000); } /* @@ -380,12 +478,6 @@ void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg) __func__, hsotg->dr_mode); break; } - - /* - * NOTE: This is required for some rockchip soc based - * platforms. - */ - msleep(50); } /* diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 9fae0291cd69..aad4107ef927 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -259,13 +259,6 @@ enum dwc2_lx_state { DWC2_L3, /* Off state */ }; -/* - * Gadget periodic tx fifo sizes as used by legacy driver - * EP0 is not included - */ -#define DWC2_G_P_LEGACY_TX_FIFO_SIZE {256, 256, 256, 256, 768, 768, 768, \ - 768, 0, 0, 0, 0, 0, 0, 0} - /* Gadget ep0 states */ enum dwc2_ep0_state { DWC2_EP0_SETUP, @@ -868,6 +861,7 @@ struct dwc2_hsotg { void *priv; int irq; struct clk *clk; + struct reset_control *reset; unsigned int queuing_high_bandwidth:1; unsigned int srp_success:1; @@ -889,6 +883,7 @@ struct dwc2_hsotg { #define DWC2_CORE_REV_2_92a 0x4f54292a #define DWC2_CORE_REV_2_94a 0x4f54294a #define DWC2_CORE_REV_3_00a 0x4f54300a +#define DWC2_CORE_REV_3_10a 0x4f54310a #if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) union dwc2_hcd_internal_flags { diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index af46adfae41c..4cd6403a7566 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -186,9 +186,10 @@ static void dwc2_hsotg_ctrl_epint(struct dwc2_hsotg *hsotg, */ static void dwc2_hsotg_init_fifo(struct dwc2_hsotg *hsotg) { - unsigned int ep; + unsigned int fifo; unsigned int addr; int timeout; + u32 dptxfsizn; u32 val; /* Reset fifo map if not correctly cleared during previous session */ @@ -216,16 +217,16 @@ static void dwc2_hsotg_init_fifo(struct dwc2_hsotg *hsotg) * them to endpoints dynamically according to maxpacket size value of * given endpoint. */ - for (ep = 1; ep < MAX_EPS_CHANNELS; ep++) { - if (!hsotg->g_tx_fifo_sz[ep]) - continue; - val = addr; - val |= hsotg->g_tx_fifo_sz[ep] << FIFOSIZE_DEPTH_SHIFT; - WARN_ONCE(addr + hsotg->g_tx_fifo_sz[ep] > hsotg->fifo_mem, - "insufficient fifo memory"); - addr += hsotg->g_tx_fifo_sz[ep]; + for (fifo = 1; fifo < MAX_EPS_CHANNELS; fifo++) { + dptxfsizn = dwc2_readl(hsotg->regs + DPTXFSIZN(fifo)); + + val = (dptxfsizn & FIFOSIZE_DEPTH_MASK) | addr; + addr += dptxfsizn >> FIFOSIZE_DEPTH_SHIFT; + + if (addr > hsotg->fifo_mem) + break; - dwc2_writel(val, hsotg->regs + DPTXFSIZN(ep)); + dwc2_writel(val, hsotg->regs + DPTXFSIZN(fifo)); } /* @@ -388,7 +389,8 @@ static int dwc2_hsotg_write_fifo(struct dwc2_hsotg *hsotg, return -ENOSPC; } } else if (hsotg->dedicated_fifos && hs_ep->index != 0) { - can_write = dwc2_readl(hsotg->regs + DTXFSTS(hs_ep->index)); + can_write = dwc2_readl(hsotg->regs + + DTXFSTS(hs_ep->fifo_index)); can_write &= 0xffff; can_write *= 4; @@ -2432,7 +2434,7 @@ static void kill_all_requests(struct dwc2_hsotg *hsotg, if (!hsotg->dedicated_fifos) return; - size = (dwc2_readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4; + size = (dwc2_readl(hsotg->regs + DTXFSTS(ep->fifo_index)) & 0xffff) * 4; if (size < ep->fifo_size) dwc2_hsotg_txfifo_flush(hsotg, ep->fifo_index); } @@ -3041,22 +3043,11 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep, break; } - /* If fifo is already allocated for this ep */ - if (hs_ep->fifo_index) { - size = hs_ep->ep.maxpacket * hs_ep->mc; - /* If bigger fifo is required deallocate current one */ - if (size > hs_ep->fifo_size) { - hsotg->fifo_map &= ~(1 << hs_ep->fifo_index); - hs_ep->fifo_index = 0; - hs_ep->fifo_size = 0; - } - } - /* * if the hardware has dedicated fifos, we must give each IN EP * a unique tx-fifo even if it is non-periodic. */ - if (dir_in && hsotg->dedicated_fifos && !hs_ep->fifo_index) { + if (dir_in && hsotg->dedicated_fifos) { u32 fifo_index = 0; u32 fifo_size = UINT_MAX; size = hs_ep->ep.maxpacket*hs_ep->mc; @@ -3129,10 +3120,6 @@ static int dwc2_hsotg_ep_disable(struct usb_ep *ep) spin_lock_irqsave(&hsotg->lock, flags); - hsotg->fifo_map &= ~(1<<hs_ep->fifo_index); - hs_ep->fifo_index = 0; - hs_ep->fifo_size = 0; - ctrl = dwc2_readl(hsotg->regs + epctrl_reg); ctrl &= ~DXEPCTL_EPENA; ctrl &= ~DXEPCTL_USBACTEP; @@ -3147,6 +3134,10 @@ static int dwc2_hsotg_ep_disable(struct usb_ep *ep) /* terminate all requests with shutdown */ kill_all_requests(hsotg, hs_ep, -ESHUTDOWN); + hsotg->fifo_map &= ~(1 << hs_ep->fifo_index); + hs_ep->fifo_index = 0; + hs_ep->fifo_size = 0; + spin_unlock_irqrestore(&hsotg->lock, flags); return 0; } @@ -3475,8 +3466,11 @@ static int dwc2_hsotg_udc_start(struct usb_gadget *gadget, otg_set_peripheral(hsotg->uphy->otg, &hsotg->gadget); spin_lock_irqsave(&hsotg->lock, flags); - dwc2_hsotg_init(hsotg); - dwc2_hsotg_core_init_disconnected(hsotg, false); + if (dwc2_hw_is_device(hsotg)) { + dwc2_hsotg_init(hsotg); + dwc2_hsotg_core_init_disconnected(hsotg, false); + } + hsotg->enabled = 0; spin_unlock_irqrestore(&hsotg->lock, flags); @@ -3813,36 +3807,10 @@ static void dwc2_hsotg_dump(struct dwc2_hsotg *hsotg) static void dwc2_hsotg_of_probe(struct dwc2_hsotg *hsotg) { struct device_node *np = hsotg->dev->of_node; - u32 len = 0; - u32 i = 0; /* Enable dma if requested in device tree */ hsotg->g_using_dma = of_property_read_bool(np, "g-use-dma"); - /* - * Register TX periodic fifo size per endpoint. - * EP0 is excluded since it has no fifo configuration. - */ - if (!of_find_property(np, "g-tx-fifo-size", &len)) - goto rx_fifo; - - len /= sizeof(u32); - - /* Read tx fifo sizes other than ep0 */ - if (of_property_read_u32_array(np, "g-tx-fifo-size", - &hsotg->g_tx_fifo_sz[1], len)) - goto rx_fifo; - - /* Add ep0 */ - len++; - - /* Make remaining TX fifos unavailable */ - if (len < MAX_EPS_CHANNELS) { - for (i = len; i < MAX_EPS_CHANNELS; i++) - hsotg->g_tx_fifo_sz[i] = 0; - } - -rx_fifo: /* Register RX fifo size */ of_property_read_u32(np, "g-rx-fifo-size", &hsotg->g_rx_fifo_sz); @@ -3864,13 +3832,10 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) struct device *dev = hsotg->dev; int epnum; int ret; - int i; - u32 p_tx_fifo[] = DWC2_G_P_LEGACY_TX_FIFO_SIZE; /* Initialize to legacy fifo configuration values */ hsotg->g_rx_fifo_sz = 2048; hsotg->g_np_g_tx_fifo_sz = 1024; - memcpy(&hsotg->g_tx_fifo_sz[1], p_tx_fifo, sizeof(p_tx_fifo)); /* Device tree specific probe */ dwc2_hsotg_of_probe(hsotg); @@ -3888,9 +3853,6 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) dev_dbg(dev, "NonPeriodic TXFIFO size: %d\n", hsotg->g_np_g_tx_fifo_sz); dev_dbg(dev, "RXFIFO size: %d\n", hsotg->g_rx_fifo_sz); - for (i = 0; i < MAX_EPS_CHANNELS; i++) - dev_dbg(dev, "Periodic TXFIFO%2d size: %d\n", i, - hsotg->g_tx_fifo_sz[i]); hsotg->gadget.max_speed = USB_SPEED_HIGH; hsotg->gadget.ops = &dwc2_hsotg_gadget_ops; @@ -3908,17 +3870,13 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) hsotg->ctrl_buff = devm_kzalloc(hsotg->dev, DWC2_CTRL_BUFF_SIZE, GFP_KERNEL); - if (!hsotg->ctrl_buff) { - dev_err(dev, "failed to allocate ctrl request buff\n"); + if (!hsotg->ctrl_buff) return -ENOMEM; - } hsotg->ep0_buff = devm_kzalloc(hsotg->dev, DWC2_CTRL_BUFF_SIZE, GFP_KERNEL); - if (!hsotg->ep0_buff) { - dev_err(dev, "failed to allocate ctrl reply buff\n"); + if (!hsotg->ep0_buff) return -ENOMEM; - } ret = devm_request_irq(hsotg->dev, irq, dwc2_hsotg_irq, IRQF_SHARED, dev_name(hsotg->dev), hsotg); diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 2df3d04d26f5..df5a06578005 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5040,7 +5040,7 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq) /* Create new workqueue and init work */ retval = -ENOMEM; - hsotg->wq_otg = create_singlethread_workqueue("dwc2"); + hsotg->wq_otg = alloc_ordered_workqueue("dwc2", 0); if (!hsotg->wq_otg) { dev_err(hsotg->dev, "Failed to create workqueue\n"); goto error2; diff --git a/drivers/usb/dwc2/hw.h b/drivers/usb/dwc2/hw.h index efc3bcde2822..91058441e62a 100644 --- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -48,6 +48,7 @@ #define GOTGCTL_ASESVLD (1 << 18) #define GOTGCTL_DBNC_SHORT (1 << 17) #define GOTGCTL_CONID_B (1 << 16) +#define GOTGCTL_DBNCE_FLTR_BYPASS (1 << 15) #define GOTGCTL_DEVHNPEN (1 << 11) #define GOTGCTL_HSTSETHNPEN (1 << 10) #define GOTGCTL_HNPREQ (1 << 9) diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index fc6f5251de5d..530959a8a6d1 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -45,6 +45,7 @@ #include <linux/platform_device.h> #include <linux/phy/phy.h> #include <linux/platform_data/s3c-hsotg.h> +#include <linux/reset.h> #include <linux/usb/of.h> @@ -337,6 +338,24 @@ static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg) { int i, ret; + hsotg->reset = devm_reset_control_get_optional(hsotg->dev, "dwc2"); + if (IS_ERR(hsotg->reset)) { + ret = PTR_ERR(hsotg->reset); + switch (ret) { + case -ENOENT: + case -ENOTSUPP: + hsotg->reset = NULL; + break; + default: + dev_err(hsotg->dev, "error getting reset control %d\n", + ret); + return ret; + } + } + + if (hsotg->reset) + reset_control_deassert(hsotg->reset); + /* Set default UTMI width */ hsotg->phyif = GUSBCFG_PHYIF16; @@ -434,6 +453,9 @@ static int dwc2_driver_remove(struct platform_device *dev) if (hsotg->ll_hw_enabled) dwc2_lowlevel_hw_disable(hsotg); + if (hsotg->reset) + reset_control_assert(hsotg->reset); + return 0; } diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index a64ce1c94d6d..b97cde76914d 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -1,7 +1,7 @@ config USB_DWC3 tristate "DesignWare USB3 DRD Core Support" depends on (USB || USB_GADGET) && HAS_DMA - select USB_XHCI_PLATFORM if USB_SUPPORT && USB_XHCI_HCD + select USB_XHCI_PLATFORM if USB_XHCI_HCD help Say Y or M here if your system has a Dual Role SuperSpeed USB controller based on the DesignWare USB3 IP Core. diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 946643157b78..7287a763cd0c 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -49,6 +49,57 @@ #define DWC3_DEFAULT_AUTOSUSPEND_DELAY 5000 /* ms */ +/** + * dwc3_get_dr_mode - Validates and sets dr_mode + * @dwc: pointer to our context structure + */ +static int dwc3_get_dr_mode(struct dwc3 *dwc) +{ + enum usb_dr_mode mode; + struct device *dev = dwc->dev; + unsigned int hw_mode; + + if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) + dwc->dr_mode = USB_DR_MODE_OTG; + + mode = dwc->dr_mode; + hw_mode = DWC3_GHWPARAMS0_MODE(dwc->hwparams.hwparams0); + + switch (hw_mode) { + case DWC3_GHWPARAMS0_MODE_GADGET: + if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) { + dev_err(dev, + "Controller does not support host mode.\n"); + return -EINVAL; + } + mode = USB_DR_MODE_PERIPHERAL; + break; + case DWC3_GHWPARAMS0_MODE_HOST: + if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { + dev_err(dev, + "Controller does not support device mode.\n"); + return -EINVAL; + } + mode = USB_DR_MODE_HOST; + break; + default: + if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) + mode = USB_DR_MODE_HOST; + else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) + mode = USB_DR_MODE_PERIPHERAL; + } + + if (mode != dwc->dr_mode) { + dev_warn(dev, + "Configuration mismatch. dr_mode forced to %s\n", + mode == USB_DR_MODE_HOST ? "host" : "gadget"); + + dwc->dr_mode = mode; + } + + return 0; +} + void dwc3_set_mode(struct dwc3 *dwc, u32 mode) { u32 reg; @@ -448,6 +499,9 @@ static int dwc3_phy_setup(struct dwc3 *dwc) if (dwc->dis_u3_susphy_quirk) reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; + if (dwc->dis_del_phy_power_chg_quirk) + reg &= ~DWC3_GUSB3PIPECTL_DEPOCHANGE; + dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); @@ -485,6 +539,23 @@ static int dwc3_phy_setup(struct dwc3 *dwc) break; } + switch (dwc->hsphy_mode) { + case USBPHY_INTERFACE_MODE_UTMI: + reg &= ~(DWC3_GUSB2PHYCFG_PHYIF_MASK | + DWC3_GUSB2PHYCFG_USBTRDTIM_MASK); + reg |= DWC3_GUSB2PHYCFG_PHYIF(UTMI_PHYIF_8_BIT) | + DWC3_GUSB2PHYCFG_USBTRDTIM(USBTRDTIM_UTMI_8_BIT); + break; + case USBPHY_INTERFACE_MODE_UTMIW: + reg &= ~(DWC3_GUSB2PHYCFG_PHYIF_MASK | + DWC3_GUSB2PHYCFG_USBTRDTIM_MASK); + reg |= DWC3_GUSB2PHYCFG_PHYIF(UTMI_PHYIF_16_BIT) | + DWC3_GUSB2PHYCFG_USBTRDTIM(USBTRDTIM_UTMI_16_BIT); + break; + default: + break; + } + /* * Above 1.94a, it is recommended to set DWC3_GUSB2PHYCFG_SUSPHY to * '0' during coreConsultant configuration. So default value will @@ -500,6 +571,9 @@ static int dwc3_phy_setup(struct dwc3 *dwc) if (dwc->dis_enblslpm_quirk) reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM; + if (dwc->dis_u2_freeclk_exists_quirk) + reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS; + dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); return 0; @@ -666,6 +740,32 @@ static int dwc3_core_init(struct dwc3 *dwc) goto err4; } + switch (dwc->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); + break; + case USB_DR_MODE_HOST: + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST); + break; + case USB_DR_MODE_OTG: + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG); + break; + default: + dev_warn(dwc->dev, "Unsupported mode %d\n", dwc->dr_mode); + break; + } + + /* + * ENDXFER polling is available on version 3.10a and later of + * the DWC_usb3 controller. It is NOT available in the + * DWC_usb31 controller. + */ + if (!dwc3_is_usb31(dwc) && dwc->revision >= DWC3_REVISION_310A) { + reg = dwc3_readl(dwc->regs, DWC3_GUCTL2); + reg |= DWC3_GUCTL2_RST_ACTBITLATER; + dwc3_writel(dwc->regs, DWC3_GUCTL2, reg); + } + return 0; err4: @@ -763,7 +863,6 @@ static int dwc3_core_init_mode(struct dwc3 *dwc) switch (dwc->dr_mode) { case USB_DR_MODE_PERIPHERAL: - dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); ret = dwc3_gadget_init(dwc); if (ret) { if (ret != -EPROBE_DEFER) @@ -772,7 +871,6 @@ static int dwc3_core_init_mode(struct dwc3 *dwc) } break; case USB_DR_MODE_HOST: - dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST); ret = dwc3_host_init(dwc); if (ret) { if (ret != -EPROBE_DEFER) @@ -781,7 +879,6 @@ static int dwc3_core_init_mode(struct dwc3 *dwc) } break; case USB_DR_MODE_OTG: - dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG); ret = dwc3_host_init(dwc); if (ret) { if (ret != -EPROBE_DEFER) @@ -888,6 +985,7 @@ static int dwc3_probe(struct platform_device *pdev) dwc->maximum_speed = usb_get_maximum_speed(dev); dwc->dr_mode = usb_get_dr_mode(dev); + dwc->hsphy_mode = of_usb_get_phy_mode(dev->of_node); dwc->has_lpm_erratum = device_property_read_bool(dev, "snps,has-lpm-erratum"); @@ -924,6 +1022,10 @@ static int dwc3_probe(struct platform_device *pdev) "snps,dis_enblslpm_quirk"); dwc->dis_rxdet_inp3_quirk = device_property_read_bool(dev, "snps,dis_rxdet_inp3_quirk"); + dwc->dis_u2_freeclk_exists_quirk = device_property_read_bool(dev, + "snps,dis-u2-freeclk-exists-quirk"); + dwc->dis_del_phy_power_chg_quirk = device_property_read_bool(dev, + "snps,dis-del-phy-power-chg-quirk"); dwc->tx_de_emphasis_quirk = device_property_read_bool(dev, "snps,tx_de_emphasis_quirk"); @@ -972,17 +1074,9 @@ static int dwc3_probe(struct platform_device *pdev) goto err2; } - if (IS_ENABLED(CONFIG_USB_DWC3_HOST) && - (dwc->dr_mode == USB_DR_MODE_OTG || - dwc->dr_mode == USB_DR_MODE_UNKNOWN)) - dwc->dr_mode = USB_DR_MODE_HOST; - else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET) && - (dwc->dr_mode == USB_DR_MODE_OTG || - dwc->dr_mode == USB_DR_MODE_UNKNOWN)) - dwc->dr_mode = USB_DR_MODE_PERIPHERAL; - - if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) - dwc->dr_mode = USB_DR_MODE_OTG; + ret = dwc3_get_dr_mode(dwc); + if (ret) + goto err3; ret = dwc3_alloc_scratch_buffers(dwc); if (ret) @@ -1192,6 +1286,7 @@ static int dwc3_runtime_resume(struct device *dev) } pm_runtime_mark_last_busy(dev); + pm_runtime_put(dev); return 0; } diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 45d6de5107c7..6b60e42626a2 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -109,6 +109,7 @@ #define DWC3_GPRTBIMAP_HS1 0xc184 #define DWC3_GPRTBIMAP_FS0 0xc188 #define DWC3_GPRTBIMAP_FS1 0xc18c +#define DWC3_GUCTL2 0xc19c #define DWC3_VER_NUMBER 0xc1a0 #define DWC3_VER_TYPE 0xc1a4 @@ -199,9 +200,18 @@ /* Global USB2 PHY Configuration Register */ #define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) +#define DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS (1 << 30) #define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) #define DWC3_GUSB2PHYCFG_ULPI_UTMI (1 << 4) #define DWC3_GUSB2PHYCFG_ENBLSLPM (1 << 8) +#define DWC3_GUSB2PHYCFG_PHYIF(n) (n << 3) +#define DWC3_GUSB2PHYCFG_PHYIF_MASK DWC3_GUSB2PHYCFG_PHYIF(1) +#define DWC3_GUSB2PHYCFG_USBTRDTIM(n) (n << 10) +#define DWC3_GUSB2PHYCFG_USBTRDTIM_MASK DWC3_GUSB2PHYCFG_USBTRDTIM(0xf) +#define USBTRDTIM_UTMI_8_BIT 9 +#define USBTRDTIM_UTMI_16_BIT 5 +#define UTMI_PHYIF_16_BIT 1 +#define UTMI_PHYIF_8_BIT 0 /* Global USB2 PHY Vendor Control Register */ #define DWC3_GUSB2PHYACC_NEWREGREQ (1 << 25) @@ -235,7 +245,10 @@ #define DWC3_GEVNTSIZ_SIZE(n) ((n) & 0xffff) /* Global HWPARAMS0 Register */ -#define DWC3_GHWPARAMS0_USB3_MODE(n) ((n) & 0x3) +#define DWC3_GHWPARAMS0_MODE(n) ((n) & 0x3) +#define DWC3_GHWPARAMS0_MODE_GADGET 0 +#define DWC3_GHWPARAMS0_MODE_HOST 1 +#define DWC3_GHWPARAMS0_MODE_DRD 2 #define DWC3_GHWPARAMS0_MBUS_TYPE(n) (((n) >> 3) & 0x7) #define DWC3_GHWPARAMS0_SBUS_TYPE(n) (((n) >> 6) & 0x3) #define DWC3_GHWPARAMS0_MDWIDTH(n) (((n) >> 8) & 0xff) @@ -279,6 +292,9 @@ #define DWC3_GFLADJ_30MHZ_SDBND_SEL (1 << 7) #define DWC3_GFLADJ_30MHZ_MASK 0x3f +/* Global User Control Register 2 */ +#define DWC3_GUCTL2_RST_ACTBITLATER (1 << 14) + /* Device Configuration Register */ #define DWC3_DCFG_DEVADDR(addr) ((addr) << 3) #define DWC3_DCFG_DEVADDR_MASK DWC3_DCFG_DEVADDR(0x7f) @@ -685,6 +701,8 @@ struct dwc3_hwparams { * @request: struct usb_request to be transferred * @list: a list_head used for request queueing * @dep: struct dwc3_ep owning this request + * @sg: pointer to first incomplete sg + * @num_pending_sgs: counter to pending sgs * @first_trb_index: index to first trb used by this request * @epnum: endpoint number to which this request refers * @trb: pointer to struct dwc3_trb @@ -697,7 +715,9 @@ struct dwc3_request { struct usb_request request; struct list_head list; struct dwc3_ep *dep; + struct scatterlist *sg; + unsigned num_pending_sgs; u8 first_trb_index; u8 epnum; struct dwc3_trb *trb; @@ -743,6 +763,9 @@ struct dwc3_scratchpad_array { * @maximum_speed: maximum speed requested (mainly for testing purposes) * @revision: revision register contents * @dr_mode: requested mode of operation + * @hsphy_mode: UTMI phy mode, one of following: + * - USBPHY_INTERFACE_MODE_UTMI + * - USBPHY_INTERFACE_MODE_UTMIW * @usb2_phy: pointer to USB2 PHY * @usb3_phy: pointer to USB3 PHY * @usb2_generic_phy: pointer to USB2 PHY @@ -799,6 +822,11 @@ struct dwc3_scratchpad_array { * @dis_u2_susphy_quirk: set if we disable usb2 suspend phy * @dis_enblslpm_quirk: set if we clear enblslpm in GUSB2PHYCFG, * disabling the suspend signal to the PHY. + * @dis_u2_freeclk_exists_quirk : set if we clear u2_freeclk_exists + * in GUSB2PHYCFG, specify that USB2 PHY doesn't + * provide a free-running PHY clock. + * @dis_del_phy_power_chg_quirk: set if we disable delay phy power + * change quirk. * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk * @tx_de_emphasis: Tx de-emphasis value * 0 - -6dB de-emphasis @@ -845,6 +873,7 @@ struct dwc3 { size_t regs_size; enum usb_dr_mode dr_mode; + enum usb_phy_interface hsphy_mode; u32 fladj; u32 irq_gadget; @@ -880,6 +909,8 @@ struct dwc3 { #define DWC3_REVISION_260A 0x5533260a #define DWC3_REVISION_270A 0x5533270a #define DWC3_REVISION_280A 0x5533280a +#define DWC3_REVISION_300A 0x5533300a +#define DWC3_REVISION_310A 0x5533310a /* * NOTICE: we're using bit 31 as a "is usb 3.1" flag. This is really @@ -942,6 +973,8 @@ struct dwc3 { unsigned dis_u2_susphy_quirk:1; unsigned dis_enblslpm_quirk:1; unsigned dis_rxdet_inp3_quirk:1; + unsigned dis_u2_freeclk_exists_quirk:1; + unsigned dis_del_phy_power_chg_quirk:1; unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis:2; diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index 22dfc3dd6a13..33ab2a203c1b 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -192,7 +192,7 @@ dwc3_ep_event_string(const struct dwc3_event_depevt *event) int ret; ret = sprintf(str, "ep%d%s: ", epnum >> 1, - (epnum & 1) ? "in" : "in"); + (epnum & 1) ? "in" : "out"); if (ret < 0) return "UNKNOWN"; diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c index e56d59b19a0e..fe414e7a9c78 100644 --- a/drivers/usb/dwc3/dwc3-of-simple.c +++ b/drivers/usb/dwc3/dwc3-of-simple.c @@ -36,36 +36,25 @@ struct dwc3_of_simple { int num_clocks; }; -static int dwc3_of_simple_probe(struct platform_device *pdev) +static int dwc3_of_simple_clk_init(struct dwc3_of_simple *simple, int count) { - struct dwc3_of_simple *simple; - struct device *dev = &pdev->dev; + struct device *dev = simple->dev; struct device_node *np = dev->of_node; - - unsigned int count; - int ret; int i; - simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL); - if (!simple) - return -ENOMEM; + simple->num_clocks = count; - count = of_clk_get_parent_count(np); if (!count) - return -ENOENT; - - simple->num_clocks = count; + return 0; simple->clks = devm_kcalloc(dev, simple->num_clocks, sizeof(struct clk *), GFP_KERNEL); if (!simple->clks) return -ENOMEM; - platform_set_drvdata(pdev, simple); - simple->dev = dev; - for (i = 0; i < simple->num_clocks; i++) { struct clk *clk; + int ret; clk = of_clk_get(np, i); if (IS_ERR(clk)) { @@ -88,6 +77,29 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) simple->clks[i] = clk; } + return 0; +} + +static int dwc3_of_simple_probe(struct platform_device *pdev) +{ + struct dwc3_of_simple *simple; + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + + int ret; + int i; + + simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL); + if (!simple) + return -ENOMEM; + + platform_set_drvdata(pdev, simple); + simple->dev = dev; + + ret = dwc3_of_simple_clk_init(simple, of_clk_get_parent_count(np)); + if (ret) + return ret; + ret = of_platform_populate(np, NULL, NULL, dev); if (ret) { for (i = 0; i < simple->num_clocks; i++) { @@ -112,7 +124,7 @@ static int dwc3_of_simple_remove(struct platform_device *pdev) int i; for (i = 0; i < simple->num_clocks; i++) { - clk_unprepare(simple->clks[i]); + clk_disable_unprepare(simple->clks[i]); clk_put(simple->clks[i]); } @@ -162,7 +174,9 @@ static const struct dev_pm_ops dwc3_of_simple_dev_pm_ops = { static const struct of_device_id of_dwc3_simple_match[] = { { .compatible = "qcom,dwc3" }, + { .compatible = "rockchip,rk3399-dwc3" }, { .compatible = "xlnx,zynqmp-dwc3" }, + { .compatible = "cavium,octeon-7130-usb-uctl" }, { /* Sentinel */ } }; MODULE_DEVICE_TABLE(of, of_dwc3_simple_match); diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 2eb84d6c24a6..6df0f5dad9a4 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -243,6 +243,15 @@ static int dwc3_pci_runtime_suspend(struct device *dev) return -EBUSY; } +static int dwc3_pci_runtime_resume(struct device *dev) +{ + struct platform_device *dwc3 = dev_get_drvdata(dev); + + return pm_runtime_get(&dwc3->dev); +} +#endif /* CONFIG_PM */ + +#ifdef CONFIG_PM_SLEEP static int dwc3_pci_pm_dummy(struct device *dev) { /* @@ -255,11 +264,11 @@ static int dwc3_pci_pm_dummy(struct device *dev) */ return 0; } -#endif /* CONFIG_PM */ +#endif /* CONFIG_PM_SLEEP */ static struct dev_pm_ops dwc3_pci_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(dwc3_pci_pm_dummy, dwc3_pci_pm_dummy) - SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_pm_dummy, + SET_RUNTIME_PM_OPS(dwc3_pci_runtime_suspend, dwc3_pci_runtime_resume, NULL) }; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 1f5597ef945d..07cc8929f271 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -174,15 +174,8 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, int status) { struct dwc3 *dwc = dep->dwc; - int i; - if (req->started) { - i = 0; - do { - dwc3_ep_inc_deq(dep); - } while(++i < req->request.num_mapped_sgs); - req->started = false; - } + req->started = false; list_del(&req->list); req->trb = NULL; @@ -348,7 +341,8 @@ static int dwc3_send_clear_stall_ep_cmd(struct dwc3_ep *dep) * IN transfers due to a mishandled error condition. Synopsys * STAR 9000614252. */ - if (dep->direction && (dwc->revision >= DWC3_REVISION_260A)) + if (dep->direction && (dwc->revision >= DWC3_REVISION_260A) && + (dwc->gadget.speed >= USB_SPEED_SUPER)) cmd |= DWC3_DEPCMD_CLEARPENDIN; memset(¶ms, 0, sizeof(params)); @@ -490,7 +484,8 @@ static int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep, params.param0 |= DWC3_DEPCFG_ACTION_INIT; } - params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN; + if (usb_endpoint_xfer_control(desc)) + params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN; if (dep->number <= 1 || usb_endpoint_xfer_isoc(desc)) params.param1 |= DWC3_DEPCFG_XFER_NOT_READY_EN; @@ -764,6 +759,8 @@ static void dwc3_gadget_ep_free_request(struct usb_ep *ep, kfree(req); } +static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep); + /** * dwc3_prepare_one_trb - setup one TRB from one request * @dep: endpoint for which this request is prepared @@ -771,15 +768,13 @@ static void dwc3_gadget_ep_free_request(struct usb_ep *ep, */ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_request *req, dma_addr_t dma, - unsigned length, unsigned last, unsigned chain, unsigned node) + unsigned length, unsigned chain, unsigned node) { struct dwc3_trb *trb; - dwc3_trace(trace_dwc3_gadget, "%s: req %p dma %08llx length %d%s%s", + dwc3_trace(trace_dwc3_gadget, "%s: req %p dma %08llx length %d%s", dep->name, req, (unsigned long long) dma, - length, last ? " last" : "", - chain ? " chain" : ""); - + length, chain ? " chain" : ""); trb = &dep->trb_pool[dep->trb_enqueue]; @@ -826,12 +821,10 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, /* always enable Continue on Short Packet */ trb->ctrl |= DWC3_TRB_CTRL_CSP; - if (!req->request.no_interrupt && !chain) + if ((!req->request.no_interrupt && !chain) || + (dwc3_calc_trbs_left(dep) == 0)) trb->ctrl |= DWC3_TRB_CTRL_IOC | DWC3_TRB_CTRL_ISP_IMI; - if (last && !usb_endpoint_xfer_isoc(dep->endpoint.desc)) - trb->ctrl |= DWC3_TRB_CTRL_LST; - if (chain) trb->ctrl |= DWC3_TRB_CTRL_CHN; @@ -856,12 +849,12 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, */ static struct dwc3_trb *dwc3_ep_prev_trb(struct dwc3_ep *dep, u8 index) { - if (!index) - index = DWC3_TRB_NUM - 2; - else - index = dep->trb_enqueue - 1; + u8 tmp = index; - return &dep->trb_pool[index]; + if (!tmp) + tmp = DWC3_TRB_NUM - 1; + + return &dep->trb_pool[tmp - 1]; } static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) @@ -894,65 +887,42 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) } static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep, - struct dwc3_request *req, unsigned int trbs_left, - unsigned int more_coming) + struct dwc3_request *req) { - struct usb_request *request = &req->request; - struct scatterlist *sg = request->sg; + struct scatterlist *sg = req->sg; struct scatterlist *s; - unsigned int last = false; unsigned int length; dma_addr_t dma; int i; - for_each_sg(sg, s, request->num_mapped_sgs, i) { + for_each_sg(sg, s, req->num_pending_sgs, i) { unsigned chain = true; length = sg_dma_len(s); dma = sg_dma_address(s); - if (sg_is_last(s)) { - if (usb_endpoint_xfer_int(dep->endpoint.desc) || - !more_coming) - last = true; - - chain = false; - } - - if (!trbs_left--) - last = true; - - if (last) + if (sg_is_last(s)) chain = false; dwc3_prepare_one_trb(dep, req, dma, length, - last, chain, i); + chain, i); - if (last) + if (!dwc3_calc_trbs_left(dep)) break; } } static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep, - struct dwc3_request *req, unsigned int trbs_left, - unsigned int more_coming) + struct dwc3_request *req) { - unsigned int last = false; unsigned int length; dma_addr_t dma; dma = req->request.dma; length = req->request.length; - if (!trbs_left) - last = true; - - /* Is this the last request? */ - if (usb_endpoint_xfer_int(dep->endpoint.desc) || !more_coming) - last = true; - dwc3_prepare_one_trb(dep, req, dma, length, - last, false, 0); + false, 0); } /* @@ -966,26 +936,19 @@ static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep, static void dwc3_prepare_trbs(struct dwc3_ep *dep) { struct dwc3_request *req, *n; - unsigned int more_coming; - u32 trbs_left; BUILD_BUG_ON_NOT_POWER_OF_2(DWC3_TRB_NUM); - trbs_left = dwc3_calc_trbs_left(dep); - if (!trbs_left) + if (!dwc3_calc_trbs_left(dep)) return; - more_coming = dep->allocated_requests - dep->queued_requests; - list_for_each_entry_safe(req, n, &dep->pending_list, list) { - if (req->request.num_mapped_sgs > 0) - dwc3_prepare_one_trb_sg(dep, req, trbs_left--, - more_coming); + if (req->num_pending_sgs > 0) + dwc3_prepare_one_trb_sg(dep, req); else - dwc3_prepare_one_trb_linear(dep, req, trbs_left--, - more_coming); + dwc3_prepare_one_trb_linear(dep, req); - if (!trbs_left) + if (!dwc3_calc_trbs_left(dep)) return; } } @@ -1101,93 +1064,29 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) trace_dwc3_ep_queue(req); - /* - * We only add to our list of requests now and - * start consuming the list once we get XferNotReady - * IRQ. - * - * That way, we avoid doing anything that we don't need - * to do now and defer it until the point we receive a - * particular token from the Host side. - * - * This will also avoid Host cancelling URBs due to too - * many NAKs. - */ ret = usb_gadget_map_request(&dwc->gadget, &req->request, dep->direction); if (ret) return ret; - list_add_tail(&req->list, &dep->pending_list); - - /* - * If there are no pending requests and the endpoint isn't already - * busy, we will just start the request straight away. - * - * This will save one IRQ (XFER_NOT_READY) and possibly make it a - * little bit faster. - */ - if (!usb_endpoint_xfer_isoc(dep->endpoint.desc) && - !usb_endpoint_xfer_int(dep->endpoint.desc)) { - ret = __dwc3_gadget_kick_transfer(dep, 0); - goto out; - } - - /* - * There are a few special cases: - * - * 1. XferNotReady with empty list of requests. We need to kick the - * transfer here in that situation, otherwise we will be NAKing - * forever. If we get XferNotReady before gadget driver has a - * chance to queue a request, we will ACK the IRQ but won't be - * able to receive the data until the next request is queued. - * The following code is handling exactly that. - * - */ - if (dep->flags & DWC3_EP_PENDING_REQUEST) { - /* - * If xfernotready is already elapsed and it is a case - * of isoc transfer, then issue END TRANSFER, so that - * you can receive xfernotready again and can have - * notion of current microframe. - */ - if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { - if (list_empty(&dep->started_list)) { - dwc3_stop_active_transfer(dwc, dep->number, true); - dep->flags = DWC3_EP_ENABLED; - } - return 0; - } - - ret = __dwc3_gadget_kick_transfer(dep, 0); - if (!ret) - dep->flags &= ~DWC3_EP_PENDING_REQUEST; + req->sg = req->request.sg; + req->num_pending_sgs = req->request.num_mapped_sgs; - goto out; - } + list_add_tail(&req->list, &dep->pending_list); - /* - * 2. XferInProgress on Isoc EP with an active transfer. We need to - * kick the transfer here after queuing a request, otherwise the - * core may not see the modified TRB(s). - */ if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && - (dep->flags & DWC3_EP_BUSY) && - !(dep->flags & DWC3_EP_MISSED_ISOC)) { - WARN_ON_ONCE(!dep->resource_index); - ret = __dwc3_gadget_kick_transfer(dep, dep->resource_index); - goto out; + dep->flags & DWC3_EP_PENDING_REQUEST) { + if (list_empty(&dep->started_list)) { + dwc3_stop_active_transfer(dwc, dep->number, true); + dep->flags = DWC3_EP_ENABLED; + } + return 0; } - /* - * 4. Stream Capable Bulk Endpoints. We need to start the transfer - * right away, otherwise host will not know we have streams to be - * handled. - */ - if (dep->stream_capable) - ret = __dwc3_gadget_kick_transfer(dep, 0); + if (!dwc3_calc_trbs_left(dep)) + return 0; -out: + ret = __dwc3_gadget_kick_transfer(dep, 0); if (ret && ret != -EBUSY) dwc3_trace(trace_dwc3_gadget, "%s: failed to kick transfers", @@ -1433,7 +1332,7 @@ static int dwc3_gadget_get_frame(struct usb_gadget *g) static int __dwc3_gadget_wakeup(struct dwc3 *dwc) { - unsigned long timeout; + int retries; int ret; u32 reg; @@ -1484,9 +1383,9 @@ static int __dwc3_gadget_wakeup(struct dwc3 *dwc) } /* poll until Link State changes to ON */ - timeout = jiffies + msecs_to_jiffies(100); + retries = 20000; - while (!time_after(jiffies, timeout)) { + while (retries--) { reg = dwc3_readl(dwc->regs, DWC3_DSTS); /* in HS, means ON */ @@ -1963,6 +1862,7 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep, unsigned int trb_status; dep->queued_requests--; + dwc3_ep_inc_deq(dep); trace_dwc3_complete_trb(dep, trb); /* @@ -1982,6 +1882,7 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep, return 1; count = trb->size & DWC3_TRB_SIZE_MASK; + req->request.actual += count; if (dep->direction) { if (count) { @@ -2021,48 +1922,51 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep, if (s_pkt && !chain) return 1; - if ((event->status & DEPEVT_STATUS_LST) && - (trb->ctrl & (DWC3_TRB_CTRL_LST | - DWC3_TRB_CTRL_HWO))) - return 1; + if ((event->status & DEPEVT_STATUS_IOC) && (trb->ctrl & DWC3_TRB_CTRL_IOC)) return 1; + return 0; } static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, const struct dwc3_event_depevt *event, int status) { - struct dwc3_request *req; + struct dwc3_request *req, *n; struct dwc3_trb *trb; - unsigned int slot; - unsigned int i; - int count = 0; + bool ioc = false; int ret; - do { + list_for_each_entry_safe(req, n, &dep->started_list, list) { + unsigned length; + unsigned actual; int chain; - req = next_request(&dep->started_list); - if (WARN_ON_ONCE(!req)) - return 1; - - chain = req->request.num_mapped_sgs > 0; - i = 0; - do { - slot = req->first_trb_index + i; - if (slot == DWC3_TRB_NUM - 1) - slot++; - slot %= DWC3_TRB_NUM; - trb = &dep->trb_pool[slot]; - count += trb->size & DWC3_TRB_SIZE_MASK; + length = req->request.length; + chain = req->num_pending_sgs > 0; + if (chain) { + struct scatterlist *sg = req->sg; + struct scatterlist *s; + unsigned int pending = req->num_pending_sgs; + unsigned int i; + for_each_sg(sg, s, pending, i) { + trb = &dep->trb_pool[dep->trb_dequeue]; + + req->sg = sg_next(s); + req->num_pending_sgs--; + + ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb, + event, status, chain); + if (ret) + break; + } + } else { + trb = &dep->trb_pool[dep->trb_dequeue]; ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb, event, status, chain); - if (ret) - break; - } while (++i < req->request.num_mapped_sgs); + } /* * We assume here we will always receive the entire data block @@ -2071,12 +1975,21 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, * should receive and we simply bounce the request back to the * gadget driver for further processing. */ - req->request.actual += req->request.length - count; + actual = length - req->request.actual; + req->request.actual = actual; + + if (ret && chain && (actual < length) && req->num_pending_sgs) + return __dwc3_gadget_kick_transfer(dep, 0); + dwc3_gadget_giveback(dep, req, status); - if (ret) + if (ret) { + if ((event->status & DEPEVT_STATUS_IOC) && + (trb->ctrl & DWC3_TRB_CTRL_IOC)) + ioc = true; break; - } while (1); + } + } /* * Our endpoint might get disabled by another thread during @@ -2103,10 +2016,9 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, return 1; } - if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) - if ((event->status & DEPEVT_STATUS_IOC) && - (trb->ctrl & DWC3_TRB_CTRL_IOC)) - return 0; + if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && ioc) + return 0; + return 1; } @@ -2322,6 +2234,18 @@ static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum, bool force) * * - Issue EndTransfer WITH CMDIOC bit set * - Wait 100us + * + * As of IP version 3.10a of the DWC_usb3 IP, the controller + * supports a mode to work around the above limitation. The + * software can poll the CMDACT bit in the DEPCMD register + * after issuing a EndTransfer command. This mode is enabled + * by writing GUCTL2[14]. This polling is already done in the + * dwc3_send_gadget_ep_cmd() function so if the mode is + * enabled, the EndTransfer command will have completed upon + * returning from this function and we don't need to delay for + * 100us. + * + * This mode is NOT available on the DWC_usb31 IP. */ cmd = DWC3_DEPCMD_ENDTRANSFER; @@ -2333,7 +2257,9 @@ static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum, bool force) WARN_ON_ONCE(ret); dep->resource_index = 0; dep->flags &= ~DWC3_EP_BUSY; - udelay(100); + + if (dwc3_is_usb31(dwc) || dwc->revision < DWC3_REVISION_310A) + udelay(100); } static void dwc3_stop_active_transfers(struct dwc3 *dwc) diff --git a/drivers/usb/dwc3/ulpi.c b/drivers/usb/dwc3/ulpi.c index ec004c6d76f2..bd86f84f3790 100644 --- a/drivers/usb/dwc3/ulpi.c +++ b/drivers/usb/dwc3/ulpi.c @@ -35,9 +35,9 @@ static int dwc3_ulpi_busyloop(struct dwc3 *dwc) return -ETIMEDOUT; } -static int dwc3_ulpi_read(struct ulpi_ops *ops, u8 addr) +static int dwc3_ulpi_read(struct device *dev, u8 addr) { - struct dwc3 *dwc = dev_get_drvdata(ops->dev); + struct dwc3 *dwc = dev_get_drvdata(dev); u32 reg; int ret; @@ -53,9 +53,9 @@ static int dwc3_ulpi_read(struct ulpi_ops *ops, u8 addr) return DWC3_GUSB2PHYACC_DATA(reg); } -static int dwc3_ulpi_write(struct ulpi_ops *ops, u8 addr, u8 val) +static int dwc3_ulpi_write(struct device *dev, u8 addr, u8 val) { - struct dwc3 *dwc = dev_get_drvdata(ops->dev); + struct dwc3 *dwc = dev_get_drvdata(dev); u32 reg; reg = DWC3_GUSB2PHYACC_NEWREGREQ | DWC3_ULPI_ADDR(addr); @@ -65,7 +65,7 @@ static int dwc3_ulpi_write(struct ulpi_ops *ops, u8 addr, u8 val) return dwc3_ulpi_busyloop(dwc); } -static struct ulpi_ops dwc3_ulpi_ops = { +static const struct ulpi_ops dwc3_ulpi_ops = { .read = dwc3_ulpi_read, .write = dwc3_ulpi_write, }; diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 3c3f31ceece7..8ad203296079 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -209,25 +209,6 @@ config USB_F_PRINTER config USB_F_TCM tristate -choice - tristate "USB Gadget Drivers" - default USB_ETH - help - A Linux "Gadget Driver" talks to the USB Peripheral Controller - driver through the abstract "gadget" API. Some other operating - systems call these "client" drivers, of which "class drivers" - are a subset (implementing a USB device class specification). - A gadget driver implements one or more USB functions using - the peripheral hardware. - - Gadget drivers are hardware-neutral, or "platform independent", - except that they sometimes must understand quirks or limitations - of the particular controllers they work with. For example, when - a controller doesn't support alternate configurations or provide - enough of the right types of endpoints, the gadget driver might - not be able work with that controller, or might need to implement - a less common variant of a device class protocol. - # this first set of drivers all depend on bulk-capable hardware. config USB_CONFIGFS @@ -439,6 +420,7 @@ config USB_CONFIGFS_F_HID config USB_CONFIGFS_F_UVC bool "USB Webcam function" depends on USB_CONFIGFS + depends on VIDEO_V4L2 depends on VIDEO_DEV select VIDEOBUF2_VMALLOC select USB_F_UVC @@ -475,6 +457,25 @@ config USB_CONFIGFS_F_TCM Both protocols can work on USB2.0 and USB3.0. UAS utilizes the USB 3.0 feature called streams support. +choice + tristate "USB Gadget Drivers" + default USB_ETH + help + A Linux "Gadget Driver" talks to the USB Peripheral Controller + driver through the abstract "gadget" API. Some other operating + systems call these "client" drivers, of which "class drivers" + are a subset (implementing a USB device class specification). + A gadget driver implements one or more USB functions using + the peripheral hardware. + + Gadget drivers are hardware-neutral, or "platform independent", + except that they sometimes must understand quirks or limitations + of the particular controllers they work with. For example, when + a controller doesn't support alternate configurations or provide + enough of the right types of endpoints, the gadget driver might + not be able work with that controller, or might need to implement + a less common variant of a device class protocol. + source "drivers/usb/gadget/legacy/Kconfig" endchoice diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 5ebe6af7976e..32176f779861 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1893,17 +1893,21 @@ unknown: /* functions always handle their interfaces and endpoints... * punt other recipients (other, WUSB, ...) to the current * configuration code. - * - * REVISIT it could make sense to let the composite device - * take such requests too, if that's ever needed: to work - * in config 0, etc. */ if (cdev->config) { list_for_each_entry(f, &cdev->config->functions, list) - if (f->req_match && f->req_match(f, ctrl)) + if (f->req_match && + f->req_match(f, ctrl, false)) goto try_fun_setup; - f = NULL; + } else { + struct usb_configuration *c; + list_for_each_entry(c, &cdev->configs, list) + list_for_each_entry(f, &c->functions, list) + if (f->req_match && + f->req_match(f, ctrl, true)) + goto try_fun_setup; } + f = NULL; switch (ctrl->bRequestType & USB_RECIP_MASK) { case USB_RECIP_INTERFACE: diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index f9237fe2be05..3984787f8e97 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -1211,8 +1211,9 @@ static void purge_configs_funcs(struct gadget_info *gi) list_move_tail(&f->list, &cfg->func_list); if (f->unbind) { - dev_err(&gi->cdev.gadget->dev, "unbind function" - " '%s'/%p\n", f->name, f); + dev_dbg(&gi->cdev.gadget->dev, + "unbind function '%s'/%p\n", + f->name, f); f->unbind(c, f); } } diff --git a/drivers/usb/gadget/function/f_eem.c b/drivers/usb/gadget/function/f_eem.c index d58bfc32be9e..007ec6e4a5d4 100644 --- a/drivers/usb/gadget/function/f_eem.c +++ b/drivers/usb/gadget/function/f_eem.c @@ -341,11 +341,15 @@ static struct sk_buff *eem_wrap(struct gether *port, struct sk_buff *skb) { struct sk_buff *skb2 = NULL; struct usb_ep *in = port->in_ep; - int padlen = 0; - u16 len = skb->len; + int headroom, tailroom, padlen = 0; + u16 len; - int headroom = skb_headroom(skb); - int tailroom = skb_tailroom(skb); + if (!skb) + return NULL; + + len = skb->len; + headroom = skb_headroom(skb); + tailroom = skb_tailroom(skb); /* When (len + EEM_HLEN + ETH_FCS_LEN) % in->maxpacket) is 0, * stick two bytes of zero-length EEM packet on the end. diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 5c8429f23a89..0aeed85bb5cb 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -98,6 +98,9 @@ static int ffs_func_set_alt(struct usb_function *, unsigned, unsigned); static void ffs_func_disable(struct usb_function *); static int ffs_func_setup(struct usb_function *, const struct usb_ctrlrequest *); +static bool ffs_func_req_match(struct usb_function *, + const struct usb_ctrlrequest *, + bool config0); static void ffs_func_suspend(struct usb_function *); static void ffs_func_resume(struct usb_function *); @@ -2243,7 +2246,9 @@ static int __ffs_data_got_descs(struct ffs_data *ffs, FUNCTIONFS_HAS_SS_DESC | FUNCTIONFS_HAS_MS_OS_DESC | FUNCTIONFS_VIRTUAL_ADDR | - FUNCTIONFS_EVENTFD)) { + FUNCTIONFS_EVENTFD | + FUNCTIONFS_ALL_CTRL_RECIP | + FUNCTIONFS_CONFIG0_SETUP)) { ret = -ENOSYS; goto error; } @@ -3094,8 +3099,9 @@ static int ffs_func_setup(struct usb_function *f, * handle them. All other either handled by composite or * passed to usb_configuration->setup() (if one is set). No * matter, we will handle requests directed to endpoint here - * as well (as it's straightforward) but what to do with any - * other request? + * as well (as it's straightforward). Other request recipient + * types are only handled when the user flag FUNCTIONFS_ALL_CTRL_RECIP + * is being used. */ if (ffs->state != FFS_ACTIVE) return -ENODEV; @@ -3116,7 +3122,10 @@ static int ffs_func_setup(struct usb_function *f, break; default: - return -EOPNOTSUPP; + if (func->ffs->user_flags & FUNCTIONFS_ALL_CTRL_RECIP) + ret = le16_to_cpu(creq->wIndex); + else + return -EOPNOTSUPP; } spin_lock_irqsave(&ffs->ev.waitq.lock, flags); @@ -3128,6 +3137,28 @@ static int ffs_func_setup(struct usb_function *f, return 0; } +static bool ffs_func_req_match(struct usb_function *f, + const struct usb_ctrlrequest *creq, + bool config0) +{ + struct ffs_function *func = ffs_func_from_usb(f); + + if (config0 && !(func->ffs->user_flags & FUNCTIONFS_CONFIG0_SETUP)) + return false; + + switch (creq->bRequestType & USB_RECIP_MASK) { + case USB_RECIP_INTERFACE: + return ffs_func_revmap_intf(func, + le16_to_cpu(creq->wIndex) >= 0); + case USB_RECIP_ENDPOINT: + return ffs_func_revmap_ep(func, + le16_to_cpu(creq->wIndex) >= 0); + default: + return (bool) (func->ffs->user_flags & + FUNCTIONFS_ALL_CTRL_RECIP); + } +} + static void ffs_func_suspend(struct usb_function *f) { ENTER(); @@ -3378,6 +3409,7 @@ static struct usb_function *ffs_alloc(struct usb_function_instance *fi) func->function.set_alt = ffs_func_set_alt; func->function.disable = ffs_func_disable; func->function.setup = ffs_func_setup; + func->function.req_match = ffs_func_req_match; func->function.suspend = ffs_func_suspend; func->function.resume = ffs_func_resume; func->function.free_func = ffs_free; @@ -3470,6 +3502,11 @@ static void _ffs_free_dev(struct ffs_dev *dev) list_del(&dev->entry); if (dev->name_allocated) kfree(dev->name); + + /* Clear the private_data pointer to stop incorrect dev access */ + if (dev->ffs_data) + dev->ffs_data->private_data = NULL; + kfree(dev); if (list_empty(&ffs_devices)) functionfs_cleanup(); diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c index 51980c50546d..e2966f87c860 100644 --- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -365,7 +365,7 @@ static int f_hidg_open(struct inode *inode, struct file *fd) static inline struct usb_request *hidg_alloc_ep_req(struct usb_ep *ep, unsigned length) { - return alloc_ep_req(ep, length, length); + return alloc_ep_req(ep, length); } static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req) @@ -617,14 +617,10 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) /* preallocate request and buffer */ status = -ENOMEM; - hidg->req = usb_ep_alloc_request(hidg->in_ep, GFP_KERNEL); + hidg->req = alloc_ep_req(hidg->in_ep, hidg->report_length); if (!hidg->req) goto fail; - hidg->req->buf = kmalloc(hidg->report_length, GFP_KERNEL); - if (!hidg->req->buf) - goto fail; - /* set descriptor dynamic values */ hidg_interface_desc.bInterfaceSubClass = hidg->bInterfaceSubClass; hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol; @@ -677,11 +673,8 @@ fail_free_descs: usb_free_all_descriptors(f); fail: ERROR(f->config->cdev, "hidg_bind FAILED\n"); - if (hidg->req != NULL) { - kfree(hidg->req->buf); - if (hidg->in_ep != NULL) - usb_ep_free_request(hidg->in_ep, hidg->req); - } + if (hidg->req != NULL) + free_ep_req(hidg->in_ep, hidg->req); return status; } @@ -809,11 +802,21 @@ end: CONFIGFS_ATTR(f_hid_opts_, report_desc); +static ssize_t f_hid_opts_dev_show(struct config_item *item, char *page) +{ + struct f_hid_opts *opts = to_f_hid_opts(item); + + return sprintf(page, "%d:%d\n", major, opts->minor); +} + +CONFIGFS_ATTR_RO(f_hid_opts_, dev); + static struct configfs_attribute *hid_attrs[] = { &f_hid_opts_attr_subclass, &f_hid_opts_attr_protocol, &f_hid_opts_attr_report_length, &f_hid_opts_attr_report_desc, + &f_hid_opts_attr_dev, NULL, }; @@ -910,8 +913,7 @@ static void hidg_unbind(struct usb_configuration *c, struct usb_function *f) /* disable/free request and end point */ usb_ep_disable(hidg->in_ep); - kfree(hidg->req->buf); - usb_ep_free_request(hidg->in_ep, hidg->req); + free_ep_req(hidg->in_ep, hidg->req); usb_free_all_descriptors(f); } diff --git a/drivers/usb/gadget/function/f_loopback.c b/drivers/usb/gadget/function/f_loopback.c index 3a9f8f9c77bd..e70093835e14 100644 --- a/drivers/usb/gadget/function/f_loopback.c +++ b/drivers/usb/gadget/function/f_loopback.c @@ -308,9 +308,7 @@ static void disable_loopback(struct f_loopback *loop) static inline struct usb_request *lb_alloc_ep_req(struct usb_ep *ep, int len) { - struct f_loopback *loop = ep->driver_data; - - return alloc_ep_req(ep, len, loop->buflen); + return alloc_ep_req(ep, len); } static int alloc_requests(struct usb_composite_dev *cdev, @@ -333,7 +331,7 @@ static int alloc_requests(struct usb_composite_dev *cdev, if (!in_req) goto fail; - out_req = lb_alloc_ep_req(loop->out_ep, 0); + out_req = lb_alloc_ep_req(loop->out_ep, loop->buflen); if (!out_req) goto fail_in; @@ -593,13 +591,9 @@ DECLARE_USB_FUNCTION(Loopback, loopback_alloc_instance, loopback_alloc); int __init lb_modinit(void) { - int ret; - - ret = usb_function_register(&Loopbackusb_func); - if (ret) - return ret; - return ret; + return usb_function_register(&Loopbackusb_func); } + void __exit lb_modexit(void) { usb_function_unregister(&Loopbackusb_func); diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c index 2505117e88e8..8f3659b65f53 100644 --- a/drivers/usb/gadget/function/f_mass_storage.c +++ b/drivers/usb/gadget/function/f_mass_storage.c @@ -311,11 +311,7 @@ struct fsg_common { /* Gadget's private data. */ void *private_data; - /* - * Vendor (8 chars), product (16 chars), release (4 - * hexadecimal digits) and NUL byte - */ - char inquiry_string[8 + 16 + 4 + 1]; + char inquiry_string[INQUIRY_STRING_LEN]; struct kref ref; }; @@ -1107,7 +1103,12 @@ static int do_inquiry(struct fsg_common *common, struct fsg_buffhd *bh) buf[5] = 0; /* No special options */ buf[6] = 0; buf[7] = 0; - memcpy(buf + 8, common->inquiry_string, sizeof common->inquiry_string); + if (curlun->inquiry_string[0]) + memcpy(buf + 8, curlun->inquiry_string, + sizeof(curlun->inquiry_string)); + else + memcpy(buf + 8, common->inquiry_string, + sizeof(common->inquiry_string)); return 36; } @@ -3209,12 +3210,27 @@ static ssize_t fsg_lun_opts_nofua_store(struct config_item *item, CONFIGFS_ATTR(fsg_lun_opts_, nofua); +static ssize_t fsg_lun_opts_inquiry_string_show(struct config_item *item, + char *page) +{ + return fsg_show_inquiry_string(to_fsg_lun_opts(item)->lun, page); +} + +static ssize_t fsg_lun_opts_inquiry_string_store(struct config_item *item, + const char *page, size_t len) +{ + return fsg_store_inquiry_string(to_fsg_lun_opts(item)->lun, page, len); +} + +CONFIGFS_ATTR(fsg_lun_opts_, inquiry_string); + static struct configfs_attribute *fsg_lun_attrs[] = { &fsg_lun_opts_attr_file, &fsg_lun_opts_attr_ro, &fsg_lun_opts_attr_removable, &fsg_lun_opts_attr_cdrom, &fsg_lun_opts_attr_nofua, + &fsg_lun_opts_attr_inquiry_string, NULL, }; diff --git a/drivers/usb/gadget/function/f_mass_storage.h b/drivers/usb/gadget/function/f_mass_storage.h index b6a9918eaefb..d3902313b8ac 100644 --- a/drivers/usb/gadget/function/f_mass_storage.h +++ b/drivers/usb/gadget/function/f_mass_storage.h @@ -100,6 +100,7 @@ struct fsg_lun_config { char removable; char cdrom; char nofua; + char inquiry_string[INQUIRY_STRING_LEN]; }; struct fsg_config { diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c index 58fc199a18ec..a5719f271bf0 100644 --- a/drivers/usb/gadget/function/f_midi.c +++ b/drivers/usb/gadget/function/f_midi.c @@ -51,6 +51,19 @@ static const char f_midi_longname[] = "MIDI Gadget"; */ #define MAX_PORTS 16 +/* MIDI message states */ +enum { + STATE_INITIAL = 0, /* pseudo state */ + STATE_1PARAM, + STATE_2PARAM_1, + STATE_2PARAM_2, + STATE_SYSEX_0, + STATE_SYSEX_1, + STATE_SYSEX_2, + STATE_REAL_TIME, + STATE_FINISHED, /* pseudo state */ +}; + /* * This is a gadget, and the IN/OUT naming is from the host's perspective. * USB -> OUT endpoint -> rawmidi @@ -61,13 +74,6 @@ struct gmidi_in_port { int active; uint8_t cable; uint8_t state; -#define STATE_UNKNOWN 0 -#define STATE_1PARAM 1 -#define STATE_2PARAM_1 2 -#define STATE_2PARAM_2 3 -#define STATE_SYSEX_0 4 -#define STATE_SYSEX_1 5 -#define STATE_SYSEX_2 6 uint8_t data[2]; }; @@ -205,7 +211,7 @@ static struct usb_gadget_strings *midi_strings[] = { static inline struct usb_request *midi_alloc_ep_req(struct usb_ep *ep, unsigned length) { - return alloc_ep_req(ep, length, length); + return alloc_ep_req(ep, length); } static const uint8_t f_midi_cin_length[] = { @@ -299,6 +305,19 @@ f_midi_complete(struct usb_ep *ep, struct usb_request *req) } } +static void f_midi_drop_out_substreams(struct f_midi *midi) +{ + unsigned int i; + + for (i = 0; i < midi->in_ports; i++) { + struct gmidi_in_port *port = midi->in_ports_array + i; + struct snd_rawmidi_substream *substream = port->substream; + + if (port->active && substream) + snd_rawmidi_drop_output(substream); + } +} + static int f_midi_start_ep(struct f_midi *midi, struct usb_function *f, struct usb_ep *ep) @@ -360,9 +379,8 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt) /* allocate a bunch of read buffers and queue them all at once. */ for (i = 0; i < midi->qlen && err == 0; i++) { struct usb_request *req = - midi_alloc_ep_req(midi->out_ep, - max_t(unsigned, midi->buflen, - bulk_out_desc.wMaxPacketSize)); + midi_alloc_ep_req(midi->out_ep, midi->buflen); + if (req == NULL) return -ENOMEM; @@ -397,6 +415,8 @@ static void f_midi_disable(struct usb_function *f) /* release IN requests */ while (kfifo_get(&midi->in_req_fifo, &req)) free_ep_req(midi->in_ep, req); + + f_midi_drop_out_substreams(midi); } static int f_midi_snd_free(struct snd_device *device) @@ -404,130 +424,166 @@ static int f_midi_snd_free(struct snd_device *device) return 0; } -static void f_midi_transmit_packet(struct usb_request *req, uint8_t p0, - uint8_t p1, uint8_t p2, uint8_t p3) -{ - unsigned length = req->length; - u8 *buf = (u8 *)req->buf + length; - - buf[0] = p0; - buf[1] = p1; - buf[2] = p2; - buf[3] = p3; - req->length = length + 4; -} - /* * Converts MIDI commands to USB MIDI packets. */ static void f_midi_transmit_byte(struct usb_request *req, struct gmidi_in_port *port, uint8_t b) { - uint8_t p0 = port->cable << 4; + uint8_t p[4] = { port->cable << 4, 0, 0, 0 }; + uint8_t next_state = STATE_INITIAL; + + switch (b) { + case 0xf8 ... 0xff: + /* System Real-Time Messages */ + p[0] |= 0x0f; + p[1] = b; + next_state = port->state; + port->state = STATE_REAL_TIME; + break; - if (b >= 0xf8) { - f_midi_transmit_packet(req, p0 | 0x0f, b, 0, 0); - } else if (b >= 0xf0) { + case 0xf7: + /* End of SysEx */ + switch (port->state) { + case STATE_SYSEX_0: + p[0] |= 0x05; + p[1] = 0xf7; + next_state = STATE_FINISHED; + break; + case STATE_SYSEX_1: + p[0] |= 0x06; + p[1] = port->data[0]; + p[2] = 0xf7; + next_state = STATE_FINISHED; + break; + case STATE_SYSEX_2: + p[0] |= 0x07; + p[1] = port->data[0]; + p[2] = port->data[1]; + p[3] = 0xf7; + next_state = STATE_FINISHED; + break; + default: + /* Ignore byte */ + next_state = port->state; + port->state = STATE_INITIAL; + } + break; + + case 0xf0 ... 0xf6: + /* System Common Messages */ + port->data[0] = port->data[1] = 0; + port->state = STATE_INITIAL; switch (b) { case 0xf0: port->data[0] = b; - port->state = STATE_SYSEX_1; + port->data[1] = 0; + next_state = STATE_SYSEX_1; break; case 0xf1: case 0xf3: port->data[0] = b; - port->state = STATE_1PARAM; + next_state = STATE_1PARAM; break; case 0xf2: port->data[0] = b; - port->state = STATE_2PARAM_1; + next_state = STATE_2PARAM_1; break; case 0xf4: case 0xf5: - port->state = STATE_UNKNOWN; + next_state = STATE_INITIAL; break; case 0xf6: - f_midi_transmit_packet(req, p0 | 0x05, 0xf6, 0, 0); - port->state = STATE_UNKNOWN; - break; - case 0xf7: - switch (port->state) { - case STATE_SYSEX_0: - f_midi_transmit_packet(req, - p0 | 0x05, 0xf7, 0, 0); - break; - case STATE_SYSEX_1: - f_midi_transmit_packet(req, - p0 | 0x06, port->data[0], 0xf7, 0); - break; - case STATE_SYSEX_2: - f_midi_transmit_packet(req, - p0 | 0x07, port->data[0], - port->data[1], 0xf7); - break; - } - port->state = STATE_UNKNOWN; + p[0] |= 0x05; + p[1] = 0xf6; + next_state = STATE_FINISHED; break; } - } else if (b >= 0x80) { + break; + + case 0x80 ... 0xef: + /* + * Channel Voice Messages, Channel Mode Messages + * and Control Change Messages. + */ port->data[0] = b; + port->data[1] = 0; + port->state = STATE_INITIAL; if (b >= 0xc0 && b <= 0xdf) - port->state = STATE_1PARAM; + next_state = STATE_1PARAM; else - port->state = STATE_2PARAM_1; - } else { /* b < 0x80 */ + next_state = STATE_2PARAM_1; + break; + + case 0x00 ... 0x7f: + /* Message parameters */ switch (port->state) { case STATE_1PARAM: - if (port->data[0] < 0xf0) { - p0 |= port->data[0] >> 4; - } else { - p0 |= 0x02; - port->state = STATE_UNKNOWN; - } - f_midi_transmit_packet(req, p0, port->data[0], b, 0); + if (port->data[0] < 0xf0) + p[0] |= port->data[0] >> 4; + else + p[0] |= 0x02; + + p[1] = port->data[0]; + p[2] = b; + /* This is to allow Running State Messages */ + next_state = STATE_1PARAM; break; case STATE_2PARAM_1: port->data[1] = b; - port->state = STATE_2PARAM_2; + next_state = STATE_2PARAM_2; break; case STATE_2PARAM_2: - if (port->data[0] < 0xf0) { - p0 |= port->data[0] >> 4; - port->state = STATE_2PARAM_1; - } else { - p0 |= 0x03; - port->state = STATE_UNKNOWN; - } - f_midi_transmit_packet(req, - p0, port->data[0], port->data[1], b); + if (port->data[0] < 0xf0) + p[0] |= port->data[0] >> 4; + else + p[0] |= 0x03; + + p[1] = port->data[0]; + p[2] = port->data[1]; + p[3] = b; + /* This is to allow Running State Messages */ + next_state = STATE_2PARAM_1; break; case STATE_SYSEX_0: port->data[0] = b; - port->state = STATE_SYSEX_1; + next_state = STATE_SYSEX_1; break; case STATE_SYSEX_1: port->data[1] = b; - port->state = STATE_SYSEX_2; + next_state = STATE_SYSEX_2; break; case STATE_SYSEX_2: - f_midi_transmit_packet(req, - p0 | 0x04, port->data[0], port->data[1], b); - port->state = STATE_SYSEX_0; + p[0] |= 0x04; + p[1] = port->data[0]; + p[2] = port->data[1]; + p[3] = b; + next_state = STATE_SYSEX_0; break; } + break; } -} -static void f_midi_drop_out_substreams(struct f_midi *midi) -{ - unsigned int i; + /* States where we have to write into the USB request */ + if (next_state == STATE_FINISHED || + port->state == STATE_SYSEX_2 || + port->state == STATE_1PARAM || + port->state == STATE_2PARAM_2 || + port->state == STATE_REAL_TIME) { - for (i = 0; i < midi->in_ports; i++) { - struct gmidi_in_port *port = midi->in_ports_array + i; - struct snd_rawmidi_substream *substream = port->substream; - if (port->active && substream) - snd_rawmidi_drop_output(substream); + unsigned int length = req->length; + u8 *buf = (u8 *)req->buf + length; + + memcpy(buf, p, sizeof(p)); + req->length = length + sizeof(p); + + if (next_state == STATE_FINISHED) { + next_state = STATE_INITIAL; + port->data[0] = port->data[1] = 0; + } } + + port->state = next_state; } static int f_midi_do_transmit(struct f_midi *midi, struct usb_ep *ep) @@ -642,7 +698,7 @@ static int f_midi_in_open(struct snd_rawmidi_substream *substream) VDBG(midi, "%s()\n", __func__); port = midi->in_ports_array + substream->number; port->substream = substream; - port->state = STATE_UNKNOWN; + port->state = STATE_INITIAL; return 0; } @@ -1123,7 +1179,7 @@ static struct usb_function_instance *f_midi_alloc_inst(void) opts->func_inst.free_func_inst = f_midi_free_inst; opts->index = SNDRV_DEFAULT_IDX1; opts->id = SNDRV_DEFAULT_STR1; - opts->buflen = 256; + opts->buflen = 512; opts->qlen = 32; opts->in_ports = 1; opts->out_ports = 1; diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index 97f0a9bc84df..639603722709 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -90,7 +90,9 @@ static inline struct f_ncm *func_to_ncm(struct usb_function *f) /* peak (theoretical) bulk transfer rate in bits-per-second */ static inline unsigned ncm_bitrate(struct usb_gadget *g) { - if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) + if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER) + return 13 * 1024 * 8 * 1000 * 8; + else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) return 13 * 512 * 8 * 1000 * 8; else return 19 * 64 * 1 * 1000 * 8; @@ -333,6 +335,76 @@ static struct usb_descriptor_header *ncm_hs_function[] = { NULL, }; + +/* super speed support: */ + +static struct usb_endpoint_descriptor ss_ncm_notify_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(NCM_STATUS_BYTECOUNT), + .bInterval = USB_MS_TO_HS_INTERVAL(NCM_STATUS_INTERVAL_MS) +}; + +static struct usb_ss_ep_comp_descriptor ss_ncm_notify_comp_desc = { + .bLength = sizeof(ss_ncm_notify_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + /* the following 3 values can be tweaked if necessary */ + /* .bMaxBurst = 0, */ + /* .bmAttributes = 0, */ + .wBytesPerInterval = cpu_to_le16(NCM_STATUS_BYTECOUNT), +}; + +static struct usb_endpoint_descriptor ss_ncm_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_endpoint_descriptor ss_ncm_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(1024), +}; + +static struct usb_ss_ep_comp_descriptor ss_ncm_bulk_comp_desc = { + .bLength = sizeof(ss_ncm_bulk_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + /* the following 2 values can be tweaked if necessary */ + /* .bMaxBurst = 0, */ + /* .bmAttributes = 0, */ +}; + +static struct usb_descriptor_header *ncm_ss_function[] = { + (struct usb_descriptor_header *) &ncm_iad_desc, + /* CDC NCM control descriptors */ + (struct usb_descriptor_header *) &ncm_control_intf, + (struct usb_descriptor_header *) &ncm_header_desc, + (struct usb_descriptor_header *) &ncm_union_desc, + (struct usb_descriptor_header *) &ecm_desc, + (struct usb_descriptor_header *) &ncm_desc, + (struct usb_descriptor_header *) &ss_ncm_notify_desc, + (struct usb_descriptor_header *) &ss_ncm_notify_comp_desc, + /* data interface, altsettings 0 and 1 */ + (struct usb_descriptor_header *) &ncm_data_nop_intf, + (struct usb_descriptor_header *) &ncm_data_intf, + (struct usb_descriptor_header *) &ss_ncm_in_desc, + (struct usb_descriptor_header *) &ss_ncm_bulk_comp_desc, + (struct usb_descriptor_header *) &ss_ncm_out_desc, + (struct usb_descriptor_header *) &ss_ncm_bulk_comp_desc, + NULL, +}; + /* string descriptors: */ #define STRING_CTRL_IDX 0 @@ -852,6 +924,8 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) */ ncm->port.is_zlp_ok = gadget_is_zlp_supported(cdev->gadget); + ncm->port.no_skb_reserve = + gadget_avoids_skb_reserve(cdev->gadget); ncm->port.cdc_filter = DEFAULT_FILTER; DBG(cdev, "activate ncm\n"); net = gether_connect(&ncm->port); @@ -1431,8 +1505,13 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) hs_ncm_notify_desc.bEndpointAddress = fs_ncm_notify_desc.bEndpointAddress; + ss_ncm_in_desc.bEndpointAddress = fs_ncm_in_desc.bEndpointAddress; + ss_ncm_out_desc.bEndpointAddress = fs_ncm_out_desc.bEndpointAddress; + ss_ncm_notify_desc.bEndpointAddress = + fs_ncm_notify_desc.bEndpointAddress; + status = usb_assign_descriptors(f, ncm_fs_function, ncm_hs_function, - NULL, NULL); + ncm_ss_function, NULL); if (status) goto fail; @@ -1450,6 +1529,7 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) ncm->task_timer.function = ncm_tx_timeout; DBG(cdev, "CDC Network: %s speed IN/%s OUT/%s NOTIFY/%s\n", + gadget_is_superspeed(c->cdev->gadget) ? "super" : gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", ncm->port.in_ep->name, ncm->port.out_ep->name, ncm->notify->name); diff --git a/drivers/usb/gadget/function/f_printer.c b/drivers/usb/gadget/function/f_printer.c index 64706a789580..0de36cda6e41 100644 --- a/drivers/usb/gadget/function/f_printer.c +++ b/drivers/usb/gadget/function/f_printer.c @@ -889,13 +889,17 @@ static void printer_soft_reset(struct printer_dev *dev) /*-------------------------------------------------------------------------*/ static bool gprinter_req_match(struct usb_function *f, - const struct usb_ctrlrequest *ctrl) + const struct usb_ctrlrequest *ctrl, + bool config0) { struct printer_dev *dev = func_to_printer(f); u16 w_index = le16_to_cpu(ctrl->wIndex); u16 w_value = le16_to_cpu(ctrl->wValue); u16 w_length = le16_to_cpu(ctrl->wLength); + if (config0) + return false; + if ((ctrl->bRequestType & USB_RECIP_MASK) != USB_RECIP_INTERFACE || (ctrl->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS) return false; diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c index c8005823b190..16562e461121 100644 --- a/drivers/usb/gadget/function/f_rndis.c +++ b/drivers/usb/gadget/function/f_rndis.c @@ -374,6 +374,9 @@ static struct sk_buff *rndis_add_header(struct gether *port, { struct sk_buff *skb2; + if (!skb) + return NULL; + skb2 = skb_realloc_headroom(skb, sizeof(struct rndis_packet_msg_type)); rndis_add_hdr(skb2); diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c index df0189ddfdd5..8784fa12ea2c 100644 --- a/drivers/usb/gadget/function/f_sourcesink.c +++ b/drivers/usb/gadget/function/f_sourcesink.c @@ -293,9 +293,7 @@ static struct usb_gadget_strings *sourcesink_strings[] = { static inline struct usb_request *ss_alloc_ep_req(struct usb_ep *ep, int len) { - struct f_sourcesink *ss = ep->driver_data; - - return alloc_ep_req(ep, len, ss->buflen); + return alloc_ep_req(ep, len); } static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep) @@ -606,7 +604,7 @@ static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in, } else { ep = is_in ? ss->in_ep : ss->out_ep; qlen = ss->bulk_qlen; - size = 0; + size = ss->buflen; } for (i = 0; i < qlen; i++) { diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c index 29b41b5dee04..27ed51b5082f 100644 --- a/drivers/usb/gadget/function/f_uvc.c +++ b/drivers/usb/gadget/function/f_uvc.c @@ -258,6 +258,13 @@ uvc_function_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) memcpy(&uvc_event->req, ctrl, sizeof(uvc_event->req)); v4l2_event_queue(&uvc->vdev, &v4l2_event); + /* Pass additional setup data to userspace */ + if (uvc->event_setup_out && uvc->event_length) { + uvc->control_req->length = uvc->event_length; + return usb_ep_queue(uvc->func.config->cdev->gadget->ep0, + uvc->control_req, GFP_ATOMIC); + } + return 0; } diff --git a/drivers/usb/gadget/function/storage_common.c b/drivers/usb/gadget/function/storage_common.c index 990df221c629..8fbf6861690d 100644 --- a/drivers/usb/gadget/function/storage_common.c +++ b/drivers/usb/gadget/function/storage_common.c @@ -369,6 +369,12 @@ ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf) } EXPORT_SYMBOL_GPL(fsg_show_removable); +ssize_t fsg_show_inquiry_string(struct fsg_lun *curlun, char *buf) +{ + return sprintf(buf, "%s\n", curlun->inquiry_string); +} +EXPORT_SYMBOL_GPL(fsg_show_inquiry_string); + /* * The caller must hold fsg->filesem for reading when calling this function. */ @@ -499,4 +505,22 @@ ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf, } EXPORT_SYMBOL_GPL(fsg_store_removable); +ssize_t fsg_store_inquiry_string(struct fsg_lun *curlun, const char *buf, + size_t count) +{ + const size_t len = min(count, sizeof(curlun->inquiry_string)); + + if (len == 0 || buf[0] == '\n') { + curlun->inquiry_string[0] = 0; + } else { + snprintf(curlun->inquiry_string, + sizeof(curlun->inquiry_string), "%-28s", buf); + if (curlun->inquiry_string[len-1] == '\n') + curlun->inquiry_string[len-1] = ' '; + } + + return count; +} +EXPORT_SYMBOL_GPL(fsg_store_inquiry_string); + MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/storage_common.h b/drivers/usb/gadget/function/storage_common.h index c3544e61da66..e69848994cb4 100644 --- a/drivers/usb/gadget/function/storage_common.h +++ b/drivers/usb/gadget/function/storage_common.h @@ -88,6 +88,12 @@ do { \ #define ASC(x) ((u8) ((x) >> 8)) #define ASCQ(x) ((u8) (x)) +/* + * Vendor (8 chars), product (16 chars), release (4 hexadecimal digits) and NUL + * byte + */ +#define INQUIRY_STRING_LEN ((size_t) (8 + 16 + 4 + 1)) + struct fsg_lun { struct file *filp; loff_t file_length; @@ -112,6 +118,7 @@ struct fsg_lun { struct device dev; const char *name; /* "lun.name" */ const char **name_pfx; /* "function.name" */ + char inquiry_string[INQUIRY_STRING_LEN]; }; static inline bool fsg_lun_is_open(struct fsg_lun *curlun) @@ -210,6 +217,7 @@ ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf); ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf); ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem, char *buf); +ssize_t fsg_show_inquiry_string(struct fsg_lun *curlun, char *buf); ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf); ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf); ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem, @@ -221,5 +229,7 @@ ssize_t fsg_store_cdrom(struct fsg_lun *curlun, struct rw_semaphore *filesem, const char *buf, size_t count); ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf, size_t count); +ssize_t fsg_store_inquiry_string(struct fsg_lun *curlun, const char *buf, + size_t count); #endif /* USB_STORAGE_COMMON_H */ diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index 5f562c1ec795..8cb08033b7c1 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -82,6 +82,7 @@ struct eth_dev { #define WORK_RX_MEMORY 0 bool zlp; + bool no_skb_reserve; u8 host_mac[ETH_ALEN]; u8 dev_mac[ETH_ALEN]; }; @@ -233,7 +234,8 @@ rx_submit(struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) * but on at least one, checksumming fails otherwise. Note: * RNDIS headers involve variable numbers of LE32 values. */ - skb_reserve(skb, NET_IP_ALIGN); + if (likely(!dev->no_skb_reserve)) + skb_reserve(skb, NET_IP_ALIGN); req->buf = skb->data; req->length = size; @@ -551,14 +553,16 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, spin_lock_irqsave(&dev->lock, flags); if (dev->port_usb) skb = dev->wrap(dev->port_usb, skb); - spin_unlock_irqrestore(&dev->lock, flags); if (!skb) { /* Multi frame CDC protocols may store the frame for * later which is not a dropped frame. */ if (dev->port_usb && - dev->port_usb->supports_multi_frame) + dev->port_usb->supports_multi_frame) { + spin_unlock_irqrestore(&dev->lock, flags); goto multiframe; + } + spin_unlock_irqrestore(&dev->lock, flags); goto drop; } } @@ -569,12 +573,14 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, req->complete = tx_complete; /* NCM requires no zlp if transfer is dwNtbInMaxSize */ - if (dev->port_usb->is_fixed && + if (dev->port_usb && + dev->port_usb->is_fixed && length == dev->port_usb->fixed_in_len && (length % in->maxpacket) == 0) req->zero = 0; else req->zero = 1; + spin_unlock_irqrestore(&dev->lock, flags); /* use zlp framing on tx for strict CDC-Ether conformance, * though any robust network rx path ignores extra padding. @@ -1063,6 +1069,7 @@ struct net_device *gether_connect(struct gether *link) if (result == 0) { dev->zlp = link->is_zlp_ok; + dev->no_skb_reserve = link->no_skb_reserve; DBG(dev, "qlen %d\n", qlen(dev->gadget, dev->qmult)); dev->header_len = link->header_len; diff --git a/drivers/usb/gadget/function/u_ether.h b/drivers/usb/gadget/function/u_ether.h index c77145bd6b5b..81d94a7ae4b4 100644 --- a/drivers/usb/gadget/function/u_ether.h +++ b/drivers/usb/gadget/function/u_ether.h @@ -64,6 +64,7 @@ struct gether { struct usb_ep *out_ep; bool is_zlp_ok; + bool no_skb_reserve; u16 cdc_filter; diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 6ded6345cd09..e0cd1e4c8892 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -375,10 +375,15 @@ __acquires(&port->port_lock) */ { struct list_head *pool = &port->write_pool; - struct usb_ep *in = port->port_usb->in; + struct usb_ep *in; int status = 0; bool do_tty_wake = false; + if (!port->port_usb) + return status; + + in = port->port_usb->in; + while (!port->write_busy && !list_empty(pool)) { struct usb_request *req; int len; diff --git a/drivers/usb/gadget/legacy/gmidi.c b/drivers/usb/gadget/legacy/gmidi.c index fc2ac150f5ff..0bf39c3ccdb1 100644 --- a/drivers/usb/gadget/legacy/gmidi.c +++ b/drivers/usb/gadget/legacy/gmidi.c @@ -47,7 +47,7 @@ static char *id = SNDRV_DEFAULT_STR1; module_param(id, charp, S_IRUGO); MODULE_PARM_DESC(id, "ID string for the USB MIDI Gadget adapter."); -static unsigned int buflen = 256; +static unsigned int buflen = 512; module_param(buflen, uint, S_IRUGO); MODULE_PARM_DESC(buflen, "MIDI buffer length"); diff --git a/drivers/usb/gadget/u_f.c b/drivers/usb/gadget/u_f.c index 4bc7eea8bfc8..18839732c840 100644 --- a/drivers/usb/gadget/u_f.c +++ b/drivers/usb/gadget/u_f.c @@ -12,14 +12,16 @@ */ #include "u_f.h" +#include <linux/usb/ch9.h> -struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len) +struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len) { struct usb_request *req; req = usb_ep_alloc_request(ep, GFP_ATOMIC); if (req) { - req->length = len ?: default_len; + req->length = usb_endpoint_dir_out(ep->desc) ? + usb_ep_align(ep, len) : len; req->buf = kmalloc(req->length, GFP_ATOMIC); if (!req->buf) { usb_ep_free_request(ep, req); diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h index 4247cc098a89..7d53a4773d1a 100644 --- a/drivers/usb/gadget/u_f.h +++ b/drivers/usb/gadget/u_f.h @@ -47,8 +47,21 @@ struct usb_ep; struct usb_request; -/* Requests allocated via alloc_ep_req() must be freed by free_ep_req(). */ -struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len); +/** + * alloc_ep_req - returns a usb_request allocated by the gadget driver and + * allocates the request's buffer. + * + * @ep: the endpoint to allocate a usb_request + * @len: usb_requests's buffer suggested size + * + * In case @ep direction is OUT, the @len will be aligned to ep's + * wMaxPacketSize. In order to avoid memory leaks or drops, *always* use + * usb_requests's length (req->length) to refer to the allocated buffer size. + * Requests allocated via alloc_ep_req() *must* be freed by free_ep_req(). + */ +struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len); + +/* Frees a usb_request previously allocated by alloc_ep_req() */ static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req) { kfree(req->buf); diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 934f83881c30..9483489080f6 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -107,10 +107,8 @@ int usb_ep_enable(struct usb_ep *ep) goto out; ret = ep->ops->enable(ep, ep->desc); - if (ret) { - ret = ret; + if (ret) goto out; - } ep->enabled = true; @@ -827,7 +825,7 @@ void usb_gadget_unmap_request_by_dev(struct device *dev, return; if (req->num_mapped_sgs) { - dma_unmap_sg(dev, req->sg, req->num_mapped_sgs, + dma_unmap_sg(dev, req->sg, req->num_sgs, is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); req->num_mapped_sgs = 0; diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c index cf8819a5c5b2..4fff51b8a18e 100644 --- a/drivers/usb/gadget/udc/fsl_qe_udc.c +++ b/drivers/usb/gadget/udc/fsl_qe_udc.c @@ -421,10 +421,8 @@ static int qe_ep_rxbd_update(struct qe_ep *ep) bd = ep->rxbase; ep->rxframe = kmalloc(sizeof(*ep->rxframe), GFP_ATOMIC); - if (ep->rxframe == NULL) { - dev_err(ep->udc->dev, "malloc rxframe failed\n"); + if (!ep->rxframe) return -ENOMEM; - } qe_frame_init(ep->rxframe); @@ -435,9 +433,7 @@ static int qe_ep_rxbd_update(struct qe_ep *ep) size = (ep->ep.maxpacket + USB_CRC_SIZE + 2) * (bdring_len + 1); ep->rxbuffer = kzalloc(size, GFP_ATOMIC); - if (ep->rxbuffer == NULL) { - dev_err(ep->udc->dev, "malloc rxbuffer failed,size=%d\n", - size); + if (!ep->rxbuffer) { kfree(ep->rxframe); return -ENOMEM; } @@ -668,10 +664,8 @@ static int qe_ep_init(struct qe_udc *udc, if ((ep->tm == USBP_TM_CTL) || (ep->dir == USB_DIR_IN)) { ep->txframe = kmalloc(sizeof(*ep->txframe), GFP_ATOMIC); - if (ep->txframe == NULL) { - dev_err(udc->dev, "malloc txframe failed\n"); + if (!ep->txframe) goto en_done2; - } qe_frame_init(ep->txframe); } @@ -1878,11 +1872,8 @@ static int qe_get_frame(struct usb_gadget *gadget) tmp = in_be16(&udc->usb_param->frame_n); if (tmp & 0x8000) - tmp = tmp & 0x07ff; - else - tmp = -EINVAL; - - return (int)tmp; + return tmp & 0x07ff; + return -EINVAL; } static int fsl_qe_start(struct usb_gadget *gadget, @@ -2347,10 +2338,8 @@ static struct qe_udc *qe_udc_config(struct platform_device *ofdev) u32 offset; udc = kzalloc(sizeof(*udc), GFP_KERNEL); - if (udc == NULL) { - dev_err(&ofdev->dev, "malloc udc failed\n"); + if (!udc) goto cleanup; - } udc->dev = &ofdev->dev; diff --git a/drivers/usb/gadget/udc/goku_udc.c b/drivers/usb/gadget/udc/goku_udc.c index d2205d9e0c8b..5107987bd353 100644 --- a/drivers/usb/gadget/udc/goku_udc.c +++ b/drivers/usb/gadget/udc/goku_udc.c @@ -1767,8 +1767,7 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) /* alloc, and start init */ dev = kzalloc (sizeof *dev, GFP_KERNEL); - if (dev == NULL){ - pr_debug("enomem %s\n", pci_name(pdev)); + if (!dev) { retval = -ENOMEM; goto err; } @@ -1839,6 +1838,8 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) err: if (dev) goku_remove (pdev); + /* gadget_release is not registered yet, kfree explicitly */ + kfree(dev); return retval; } diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index 614ab951a4ae..61c938c36d88 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -589,7 +589,7 @@ static void net2280_free_request(struct usb_ep *_ep, struct usb_request *_req) ep = container_of(_ep, struct net2280_ep, ep); if (!_ep || !_req) { - dev_err(&ep->dev->pdev->dev, "%s: Inavlid ep=%p or req=%p\n", + dev_err(&ep->dev->pdev->dev, "%s: Invalid ep=%p or req=%p\n", __func__, _ep, _req); return; } @@ -1137,8 +1137,10 @@ dma_done(struct net2280_ep *ep, struct net2280_request *req, u32 dmacount, done(ep, req, status); } -static void scan_dma_completions(struct net2280_ep *ep) +static int scan_dma_completions(struct net2280_ep *ep) { + int num_completed = 0; + /* only look at descriptors that were "naturally" retired, * so fifo and list head state won't matter */ @@ -1166,6 +1168,7 @@ static void scan_dma_completions(struct net2280_ep *ep) break; /* single transfer mode */ dma_done(ep, req, tmp, 0); + num_completed++; break; } else if (!ep->is_in && (req->req.length % ep->ep.maxpacket) && @@ -1194,7 +1197,10 @@ static void scan_dma_completions(struct net2280_ep *ep) } } dma_done(ep, req, tmp, 0); + num_completed++; } + + return num_completed; } static void restart_dma(struct net2280_ep *ep) @@ -1567,6 +1573,44 @@ static struct usb_ep *net2280_match_ep(struct usb_gadget *_gadget, return ep; } + /* USB3380: Only first four endpoints have DMA channels. Allocate + * slower interrupt endpoints from PIO hw endpoints, to allow bulk/isoc + * endpoints use DMA hw endpoints. + */ + if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT && + usb_endpoint_dir_in(desc)) { + ep = gadget_find_ep_by_name(_gadget, "ep2in"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + ep = gadget_find_ep_by_name(_gadget, "ep4in"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + } else if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT && + !usb_endpoint_dir_in(desc)) { + ep = gadget_find_ep_by_name(_gadget, "ep1out"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + ep = gadget_find_ep_by_name(_gadget, "ep3out"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + } else if (usb_endpoint_type(desc) != USB_ENDPOINT_XFER_BULK && + usb_endpoint_dir_in(desc)) { + ep = gadget_find_ep_by_name(_gadget, "ep1in"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + ep = gadget_find_ep_by_name(_gadget, "ep3in"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + } else if (usb_endpoint_type(desc) != USB_ENDPOINT_XFER_BULK && + !usb_endpoint_dir_in(desc)) { + ep = gadget_find_ep_by_name(_gadget, "ep2out"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + ep = gadget_find_ep_by_name(_gadget, "ep4out"); + if (ep && usb_gadget_ep_match_desc(_gadget, ep, desc, ep_comp)) + return ep; + } + /* USB3380: use same address for usb and hardware endpoints */ snprintf(name, sizeof(name), "ep%d%s", usb_endpoint_num(desc), usb_endpoint_dir_in(desc) ? "in" : "out"); @@ -2547,8 +2591,11 @@ static void handle_ep_small(struct net2280_ep *ep) /* manual DMA queue advance after short OUT */ if (likely(ep->dma)) { if (t & BIT(SHORT_PACKET_TRANSFERRED_INTERRUPT)) { - u32 count; + struct net2280_request *stuck_req = NULL; int stopped = ep->stopped; + int num_completed; + int stuck = 0; + u32 count; /* TRANSFERRED works around OUT_DONE erratum 0112. * we expect (N <= maxpacket) bytes; host wrote M. @@ -2560,7 +2607,7 @@ static void handle_ep_small(struct net2280_ep *ep) /* any preceding dma transfers must finish. * dma handles (M >= N), may empty the queue */ - scan_dma_completions(ep); + num_completed = scan_dma_completions(ep); if (unlikely(list_empty(&ep->queue) || ep->out_overflow)) { req = NULL; @@ -2580,6 +2627,31 @@ static void handle_ep_small(struct net2280_ep *ep) req = NULL; break; } + + /* Escape loop if no dma transfers completed + * after few retries. + */ + if (num_completed == 0) { + if (stuck_req == req && + readl(&ep->dma->dmadesc) != + req->td_dma && stuck++ > 5) { + count = readl( + &ep->dma->dmacount); + count &= DMA_BYTE_COUNT_MASK; + req = NULL; + ep_dbg(ep->dev, "%s escape stuck %d, count %u\n", + ep->ep.name, stuck, + count); + break; + } else if (stuck_req != req) { + stuck_req = req; + stuck = 0; + } + } else { + stuck_req = NULL; + stuck = 0; + } + udelay(1); } diff --git a/drivers/usb/gadget/udc/omap_udc.c b/drivers/usb/gadget/udc/omap_udc.c index 9b7d39484ed3..a8709f9e5648 100644 --- a/drivers/usb/gadget/udc/omap_udc.c +++ b/drivers/usb/gadget/udc/omap_udc.c @@ -2875,7 +2875,7 @@ bad_on_1710: xceiv = NULL; /* "udc" is now valid */ pullup_disable(udc); -#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) +#if IS_ENABLED(CONFIG_USB_OHCI_HCD) udc->gadget.is_otg = (config->otg != 0); #endif diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c index ad140aa00132..7fa60f5b7ae4 100644 --- a/drivers/usb/gadget/udc/pxa27x_udc.c +++ b/drivers/usb/gadget/udc/pxa27x_udc.c @@ -33,6 +33,7 @@ #include <linux/usb.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> +#include <linux/usb/phy.h> #include "pxa27x_udc.h" @@ -1655,6 +1656,37 @@ static int pxa_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA) return -EOPNOTSUPP; } +/** + * pxa_udc_phy_event - Called by phy upon VBus event + * @nb: notifier block + * @action: phy action, is vbus connect or disconnect + * @data: the usb_gadget structure in pxa_udc + * + * Called by the USB Phy when a cable connect or disconnect is sensed. + * + * Returns 0 + */ +static int pxa_udc_phy_event(struct notifier_block *nb, unsigned long action, + void *data) +{ + struct usb_gadget *gadget = data; + + switch (action) { + case USB_EVENT_VBUS: + usb_gadget_vbus_connect(gadget); + return NOTIFY_OK; + case USB_EVENT_NONE: + usb_gadget_vbus_disconnect(gadget); + return NOTIFY_OK; + default: + return NOTIFY_DONE; + } +} + +static struct notifier_block pxa27x_udc_phy = { + .notifier_call = pxa_udc_phy_event, +}; + static int pxa27x_udc_start(struct usb_gadget *g, struct usb_gadget_driver *driver); static int pxa27x_udc_stop(struct usb_gadget *g); @@ -2432,7 +2464,14 @@ static int pxa_udc_probe(struct platform_device *pdev) return udc->irq; udc->dev = &pdev->dev; - udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + if (of_have_populated_dt()) { + udc->transceiver = + devm_usb_get_phy_by_phandle(udc->dev, "phys", 0); + if (IS_ERR(udc->transceiver)) + return PTR_ERR(udc->transceiver); + } else { + udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + } if (IS_ERR(udc->gpiod)) { dev_err(&pdev->dev, "Couldn't find or request D+ gpio : %ld\n", @@ -2465,14 +2504,20 @@ static int pxa_udc_probe(struct platform_device *pdev) goto err; } + if (!IS_ERR_OR_NULL(udc->transceiver)) + usb_register_notifier(udc->transceiver, &pxa27x_udc_phy); retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget); if (retval) - goto err; + goto err_add_gadget; pxa_init_debugfs(udc); if (should_enable_udc(udc)) udc_enable(udc); return 0; + +err_add_gadget: + if (!IS_ERR_OR_NULL(udc->transceiver)) + usb_unregister_notifier(udc->transceiver, &pxa27x_udc_phy); err: clk_unprepare(udc->clk); return retval; @@ -2489,6 +2534,8 @@ static int pxa_udc_remove(struct platform_device *_dev) usb_del_gadget_udc(&udc->gadget); pxa_cleanup_debugfs(udc); + if (!IS_ERR_OR_NULL(udc->transceiver)) + usb_unregister_notifier(udc->transceiver, &pxa27x_udc_phy); usb_put_phy(udc->transceiver); udc->transceiver = NULL; diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index 93a3bec81df7..fb8fc34827ab 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -106,6 +106,7 @@ /* DRD_CON */ #define DRD_CON_PERI_CON BIT(24) +#define DRD_CON_VBOUT BIT(0) /* USB_INT_ENA_1 and USB_INT_STA_1 */ #define USB_INT_1_B3_PLLWKUP BIT(31) @@ -363,6 +364,7 @@ static void usb3_init_epc_registers(struct renesas_usb3 *usb3) { /* FIXME: How to change host / peripheral mode as well? */ usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON); + usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON); usb3_write(usb3, ~0, USB3_USB_INT_STA_1); usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG); diff --git a/drivers/usb/gadget/udc/udc-xilinx.c b/drivers/usb/gadget/udc/udc-xilinx.c index f8bf290f1894..588e2531b8b8 100644 --- a/drivers/usb/gadget/udc/udc-xilinx.c +++ b/drivers/usb/gadget/udc/udc-xilinx.c @@ -973,10 +973,8 @@ static struct usb_request *xudc_ep_alloc_request(struct usb_ep *_ep, udc = ep->udc; req = kzalloc(sizeof(*req), gfp_flags); - if (!req) { - dev_err(udc->dev, "%s:not enough memory", __func__); + if (!req) return NULL; - } req->ep = ep; INIT_LIST_HEAD(&req->queue); diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 2e710a4cca52..0b80cee30da4 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -472,7 +472,7 @@ config USB_OHCI_HCD_AT91 config USB_OHCI_HCD_OMAP3 tristate "OHCI support for OMAP3 and later chips" - depends on (ARCH_OMAP3 || ARCH_OMAP4) + depends on (ARCH_OMAP3 || ARCH_OMAP4 || SOC_OMAP5) default y ---help--- Enables support for the on-chip OHCI controller on diff --git a/drivers/usb/host/bcma-hcd.c b/drivers/usb/host/bcma-hcd.c index 172ef17911aa..e0761d92f2b6 100644 --- a/drivers/usb/host/bcma-hcd.c +++ b/drivers/usb/host/bcma-hcd.c @@ -27,6 +27,7 @@ #include <linux/slab.h> #include <linux/of.h> #include <linux/of_gpio.h> +#include <linux/of_platform.h> #include <linux/usb/ehci_pdriver.h> #include <linux/usb/ohci_pdriver.h> @@ -34,6 +35,9 @@ MODULE_AUTHOR("Hauke Mehrtens"); MODULE_DESCRIPTION("Common USB driver for BCMA Bus"); MODULE_LICENSE("GPL"); +/* See BCMA_CLKCTLST_EXTRESREQ and BCMA_CLKCTLST_EXTRESST */ +#define USB_BCMA_CLKCTLST_USB_CLK_REQ 0x00000100 + struct bcma_hcd_device { struct bcma_device *core; struct platform_device *ehci_dev; @@ -165,6 +169,76 @@ static void bcma_hcd_init_chip_mips(struct bcma_device *dev) } } +/** + * bcma_hcd_usb20_old_arm_init - Initialize old USB 2.0 controller on ARM + * + * Old USB 2.0 core is identified as BCMA_CORE_USB20_HOST and was introduced + * long before Northstar devices. It seems some cheaper chipsets like BCM53573 + * still use it. + * Initialization of this old core differs between MIPS and ARM. + */ +static int bcma_hcd_usb20_old_arm_init(struct bcma_hcd_device *usb_dev) +{ + struct bcma_device *core = usb_dev->core; + struct device *dev = &core->dev; + struct bcma_device *pmu_core; + + usleep_range(10000, 20000); + if (core->id.rev < 5) + return 0; + + pmu_core = bcma_find_core(core->bus, BCMA_CORE_PMU); + if (!pmu_core) { + dev_err(dev, "Could not find PMU core\n"); + return -ENOENT; + } + + /* Take USB core out of reset */ + bcma_awrite32(core, BCMA_IOCTL, BCMA_IOCTL_CLK | BCMA_IOCTL_FGC); + usleep_range(100, 200); + bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET); + usleep_range(100, 200); + bcma_awrite32(core, BCMA_RESET_CTL, 0); + usleep_range(100, 200); + bcma_awrite32(core, BCMA_IOCTL, BCMA_IOCTL_CLK); + usleep_range(100, 200); + + /* Enable Misc PLL */ + bcma_write32(core, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT | + BCMA_CLKCTLST_HQCLKREQ | + USB_BCMA_CLKCTLST_USB_CLK_REQ); + usleep_range(100, 200); + + bcma_write32(core, 0x510, 0xc7f85000); + bcma_write32(core, 0x510, 0xc7f85003); + usleep_range(300, 600); + + /* Program USB PHY PLL parameters */ + bcma_write32(pmu_core, BCMA_CC_PMU_PLLCTL_ADDR, 0x6); + bcma_write32(pmu_core, BCMA_CC_PMU_PLLCTL_DATA, 0x005360c1); + usleep_range(100, 200); + bcma_write32(pmu_core, BCMA_CC_PMU_PLLCTL_ADDR, 0x7); + bcma_write32(pmu_core, BCMA_CC_PMU_PLLCTL_DATA, 0x0); + usleep_range(100, 200); + bcma_set32(pmu_core, BCMA_CC_PMU_CTL, BCMA_CC_PMU_CTL_PLL_UPD); + usleep_range(100, 200); + + bcma_write32(core, 0x510, 0x7f8d007); + udelay(1000); + + /* Take controller out of reset */ + bcma_write32(core, 0x200, 0x4ff); + usleep_range(25, 50); + bcma_write32(core, 0x200, 0x6ff); + usleep_range(25, 50); + bcma_write32(core, 0x200, 0x7ff); + usleep_range(25, 50); + + of_platform_default_populate(dev->of_node, NULL, dev); + + return 0; +} + static void bcma_hcd_init_chip_arm_phy(struct bcma_device *dev) { struct bcma_device *arm_core; @@ -338,6 +412,18 @@ err_unregister_ohci_dev: return err; } +static int bcma_hcd_usb30_init(struct bcma_hcd_device *bcma_hcd) +{ + struct bcma_device *core = bcma_hcd->core; + struct device *dev = &core->dev; + + bcma_core_enable(core, 0); + + of_platform_default_populate(dev->of_node, NULL, dev); + + return 0; +} + static int bcma_hcd_probe(struct bcma_device *core) { int err; @@ -357,14 +443,24 @@ static int bcma_hcd_probe(struct bcma_device *core) switch (core->id.id) { case BCMA_CORE_USB20_HOST: + if (IS_ENABLED(CONFIG_ARM)) + err = bcma_hcd_usb20_old_arm_init(usb_dev); + else if (IS_ENABLED(CONFIG_MIPS)) + err = bcma_hcd_usb20_init(usb_dev); + else + err = -ENOTSUPP; + break; case BCMA_CORE_NS_USB20: err = bcma_hcd_usb20_init(usb_dev); - if (err) - return err; + break; + case BCMA_CORE_NS_USB30: + err = bcma_hcd_usb30_init(usb_dev); break; default: return -ENODEV; } + if (err) + return err; bcma_set_drvdata(core, usb_dev); return 0; @@ -416,6 +512,7 @@ static int bcma_hcd_resume(struct bcma_device *dev) static const struct bcma_device_id bcma_hcd_table[] = { BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS), BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB20, BCMA_ANY_REV, BCMA_ANY_CLASS), + BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB30, BCMA_ANY_REV, BCMA_ANY_CLASS), {}, }; MODULE_DEVICE_TABLE(bcma, bcma_hcd_table); diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index 6816b8c371d0..876dca4fc216 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -38,7 +38,7 @@ #include "ehci.h" #define DRIVER_DESC "EHCI generic platform driver" -#define EHCI_MAX_CLKS 3 +#define EHCI_MAX_CLKS 4 #define EHCI_MAX_RSTS 3 #define hcd_to_ehci_priv(h) ((struct ehci_platform_priv *)hcd_to_ehci(h)->priv) diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c index 0960f41f945a..55a0ae6f2d74 100644 --- a/drivers/usb/host/fhci-hcd.c +++ b/drivers/usb/host/fhci-hcd.c @@ -310,10 +310,8 @@ static struct fhci_usb *fhci_create_lld(struct fhci_hcd *fhci) /* allocate memory for SCC data structure */ usb = kzalloc(sizeof(*usb), GFP_KERNEL); - if (!usb) { - fhci_err(fhci, "no memory for SCC data struct\n"); + if (!usb) return NULL; - } usb->fhci = fhci; usb->hc_list = fhci->hc_list; diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c index 1044b0f9d656..f07ccb25bc24 100644 --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -222,23 +222,17 @@ static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) pdata->controller_ver = usb_get_ver_info(np); /* Activate Erratum by reading property in device tree */ - if (of_get_property(np, "fsl,usb-erratum-a007792", NULL)) - pdata->has_fsl_erratum_a007792 = 1; - else - pdata->has_fsl_erratum_a007792 = 0; - if (of_get_property(np, "fsl,usb-erratum-a005275", NULL)) - pdata->has_fsl_erratum_a005275 = 1; - else - pdata->has_fsl_erratum_a005275 = 0; + pdata->has_fsl_erratum_a007792 = + of_property_read_bool(np, "fsl,usb-erratum-a007792"); + pdata->has_fsl_erratum_a005275 = + of_property_read_bool(np, "fsl,usb-erratum-a005275"); /* * Determine whether phy_clk_valid needs to be checked * by reading property in device tree */ - if (of_get_property(np, "phy-clk-valid", NULL)) - pdata->check_phy_clk_valid = 1; - else - pdata->check_phy_clk_valid = 0; + pdata->check_phy_clk_valid = + of_property_read_bool(np, "phy-clk-valid"); if (pdata->have_sysif_regs) { if (pdata->controller_ver == FSL_USB_VER_NONE) { diff --git a/drivers/usb/host/max3421-hcd.c b/drivers/usb/host/max3421-hcd.c index 2f7690092a7f..369869a29ebd 100644 --- a/drivers/usb/host/max3421-hcd.c +++ b/drivers/usb/host/max3421-hcd.c @@ -1856,15 +1856,11 @@ max3421_probe(struct spi_device *spi) INIT_LIST_HEAD(&max3421_hcd->ep_list); max3421_hcd->tx = kmalloc(sizeof(*max3421_hcd->tx), GFP_KERNEL); - if (!max3421_hcd->tx) { - dev_err(&spi->dev, "failed to kmalloc tx buffer\n"); + if (!max3421_hcd->tx) goto error; - } max3421_hcd->rx = kmalloc(sizeof(*max3421_hcd->rx), GFP_KERNEL); - if (!max3421_hcd->rx) { - dev_err(&spi->dev, "failed to kmalloc rx buffer\n"); + if (!max3421_hcd->rx) goto error; - } max3421_hcd->spi_thread = kthread_run(max3421_spi_thread, hcd, "max3421_spi_thread"); diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index d177372bb357..5b5880c0ae19 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -21,8 +21,11 @@ #include <linux/io.h> #include <linux/kernel.h> #include <linux/module.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> #include <linux/usb.h> #include <linux/usb/hcd.h> +#include <soc/at91/atmel-sfr.h> #include "ohci.h" @@ -51,6 +54,7 @@ struct ohci_at91_priv { struct clk *hclk; bool clocked; bool wakeup; /* Saved wake-up state for resume */ + struct regmap *sfr_regmap; }; /* interface and function clocks; sometimes also an AHB clock */ @@ -134,6 +138,17 @@ static void at91_stop_hc(struct platform_device *pdev) static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); +static struct regmap *at91_dt_syscon_sfr(void) +{ + struct regmap *regmap; + + regmap = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr"); + if (IS_ERR(regmap)) + regmap = NULL; + + return regmap; +} + /* configure so an HC device and id are always provided */ /* always called with process context; sleeping is OK */ @@ -197,6 +212,10 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, goto err; } + ohci_at91->sfr_regmap = at91_dt_syscon_sfr(); + if (!ohci_at91->sfr_regmap) + dev_warn(dev, "failed to find sfr node\n"); + board = hcd->self.controller->platform_data; ohci = hcd_to_ohci(hcd); ohci->num_ports = board->ports; @@ -282,6 +301,28 @@ static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf) return length; } +static int ohci_at91_port_suspend(struct regmap *regmap, u8 set) +{ + u32 regval; + int ret; + + if (!regmap) + return 0; + + ret = regmap_read(regmap, AT91_SFR_OHCIICR, ®val); + if (ret) + return ret; + + if (set) + regval |= AT91_OHCIICR_USB_SUSPEND; + else + regval &= ~AT91_OHCIICR_USB_SUSPEND; + + regmap_write(regmap, AT91_SFR_OHCIICR, regval); + + return 0; +} + /* * Look at the control requests to the root hub and see if we need to override. */ @@ -289,6 +330,7 @@ static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) { struct at91_usbh_data *pdata = dev_get_platdata(hcd->self.controller); + struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd); struct usb_hub_descriptor *desc; int ret = -EINVAL; u32 *data = (u32 *)buf; @@ -301,7 +343,8 @@ static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, switch (typeReq) { case SetPortFeature: - if (wValue == USB_PORT_FEAT_POWER) { + switch (wValue) { + case USB_PORT_FEAT_POWER: dev_dbg(hcd->self.controller, "SetPortFeat: POWER\n"); if (valid_port(wIndex)) { ohci_at91_usb_set_power(pdata, wIndex, 1); @@ -309,6 +352,15 @@ static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, } goto out; + + case USB_PORT_FEAT_SUSPEND: + dev_dbg(hcd->self.controller, "SetPortFeat: SUSPEND\n"); + if (valid_port(wIndex)) { + ohci_at91_port_suspend(ohci_at91->sfr_regmap, + 1); + return 0; + } + break; } break; @@ -342,6 +394,16 @@ static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, ohci_at91_usb_set_power(pdata, wIndex, 0); return 0; } + break; + + case USB_PORT_FEAT_SUSPEND: + dev_dbg(hcd->self.controller, "ClearPortFeature: SUSPEND\n"); + if (valid_port(wIndex)) { + ohci_at91_port_suspend(ohci_at91->sfr_regmap, + 0); + return 0; + } + break; } break; } @@ -599,6 +661,8 @@ ohci_hcd_at91_drv_suspend(struct device *dev) if (ohci_at91->wakeup) enable_irq_wake(hcd->irq); + ohci_at91_port_suspend(ohci_at91->sfr_regmap, 1); + ret = ohci_suspend(hcd, ohci_at91->wakeup); if (ret) { if (ohci_at91->wakeup) @@ -638,6 +702,9 @@ ohci_hcd_at91_drv_resume(struct device *dev) at91_start_clock(ohci_at91); ohci_resume(hcd, false); + + ohci_at91_port_suspend(ohci_at91->sfr_regmap, 0); + return 0; } diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index de7c68602a7e..495c1454b9e8 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -36,7 +36,6 @@ #include <mach/mux.h> #include <mach/hardware.h> -#include <mach/irqs.h> #include <mach/usb.h> diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c index 2ac266d692a2..3a9ea32508df 100644 --- a/drivers/usb/host/ohci-sa1111.c +++ b/drivers/usb/host/ohci-sa1111.c @@ -13,9 +13,7 @@ * This file is licenced under the GPL. */ -#include <mach/hardware.h> #include <asm/mach-types.h> -#include <mach/assabet.h> #include <asm/hardware/sa1111.h> #ifndef CONFIG_SA1111 @@ -127,7 +125,7 @@ static int sa1111_start_hc(struct sa1111_dev *dev) dev_dbg(&dev->dev, "starting SA-1111 OHCI USB Controller\n"); if (machine_is_xp860() || - machine_has_neponset() || + machine_is_assabet() || machine_is_pfs168() || machine_is_badge4()) usb_rst = USB_RESET_PWRSENSELOW | USB_RESET_PWRCTRLLOW; diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index a7de8e8bb458..5d3d914ab4fb 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -601,11 +601,8 @@ static int uhci_start(struct usb_hcd *hcd) uhci->frame_cpu = kcalloc(UHCI_NUMFRAMES, sizeof(*uhci->frame_cpu), GFP_KERNEL); - if (!uhci->frame_cpu) { - dev_err(uhci_dev(uhci), - "unable to allocate memory for frame pointers\n"); + if (!uhci->frame_cpu) goto err_alloc_frame_cpu; - } uhci->td_pool = dma_pool_create("uhci_td", uhci_dev(uhci), sizeof(struct uhci_td), 16, 0); diff --git a/drivers/usb/host/whci/init.c b/drivers/usb/host/whci/init.c index e36372393bb1..ad8eb575c30a 100644 --- a/drivers/usb/host/whci/init.c +++ b/drivers/usb/host/whci/init.c @@ -65,7 +65,7 @@ int whc_init(struct whc *whc) init_waitqueue_head(&whc->cmd_wq); init_waitqueue_head(&whc->async_list_wq); init_waitqueue_head(&whc->periodic_list_wq); - whc->workqueue = create_singlethread_workqueue(dev_name(&whc->umc->dev)); + whc->workqueue = alloc_ordered_workqueue(dev_name(&whc->umc->dev), 0); if (whc->workqueue == NULL) { ret = -ENOMEM; goto error; diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index fd9fd12e4861..797137e26549 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -850,6 +850,10 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) spin_lock_irqsave(&xhci->lock, flags); ep->stop_cmds_pending--; + if (xhci->xhc_state & XHCI_STATE_REMOVING) { + spin_unlock_irqrestore(&xhci->lock, flags); + return; + } if (xhci->xhc_state & XHCI_STATE_DYING) { xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "Stop EP timer ran, but another timer marked " @@ -903,7 +907,7 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) spin_unlock_irqrestore(&xhci->lock, flags); xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "Calling usb_hc_died()"); - usb_hc_died(xhci_to_hcd(xhci)->primary_hcd); + usb_hc_died(xhci_to_hcd(xhci)); xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "xHCI host controller is dead."); } diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c index 0f53ae0f464e..a59fafb4b329 100644 --- a/drivers/usb/host/xhci-tegra.c +++ b/drivers/usb/host/xhci-tegra.c @@ -1033,7 +1033,6 @@ static int tegra_xusb_probe(struct platform_device *pdev) tegra->phys = devm_kcalloc(&pdev->dev, tegra->num_phys, sizeof(*tegra->phys), GFP_KERNEL); if (!tegra->phys) { - dev_err(&pdev->dev, "failed to allocate PHY array\n"); err = -ENOMEM; goto put_padctl; } @@ -1117,6 +1116,7 @@ static int tegra_xusb_probe(struct platform_device *pdev) tegra->hcd); if (!xhci->shared_hcd) { dev_err(&pdev->dev, "failed to create shared HCD\n"); + err = -ENOMEM; goto remove_usb2; } diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 01d96c9b3a75..1a4ca02729c2 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -295,10 +295,8 @@ static int xhci_setup_msix(struct xhci_hcd *xhci) xhci->msix_entries = kmalloc((sizeof(struct msix_entry))*xhci->msix_count, GFP_KERNEL); - if (!xhci->msix_entries) { - xhci_err(xhci, "Failed to allocate MSI-X entries\n"); + if (!xhci->msix_entries) return -ENOMEM; - } for (i = 0; i < xhci->msix_count; i++) { xhci->msix_entries[i].entry = i; diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig index eb8f8d37cd95..47b357760afc 100644 --- a/drivers/usb/misc/Kconfig +++ b/drivers/usb/misc/Kconfig @@ -240,6 +240,12 @@ config USB_HSIC_USB3503 help This option enables support for SMSC USB3503 HSIC to USB 2.0 Driver. +config USB_HSIC_USB4604 + tristate "USB4604 HSIC to USB20 Driver" + depends on I2C + help + This option enables support for SMSC USB4604 HSIC to USB 2.0 Driver. + config USB_LINK_LAYER_TEST tristate "USB Link Layer Test driver" help diff --git a/drivers/usb/misc/Makefile b/drivers/usb/misc/Makefile index 3d79faaad2fb..3d1992750da4 100644 --- a/drivers/usb/misc/Makefile +++ b/drivers/usb/misc/Makefile @@ -24,6 +24,7 @@ obj-$(CONFIG_USB_USS720) += uss720.o obj-$(CONFIG_USB_SEVSEG) += usbsevseg.o obj-$(CONFIG_USB_YUREX) += yurex.o obj-$(CONFIG_USB_HSIC_USB3503) += usb3503.o +obj-$(CONFIG_USB_HSIC_USB4604) += usb4604.o obj-$(CONFIG_USB_CHAOSKEY) += chaoskey.o obj-$(CONFIG_UCSI) += ucsi.o diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c index 3071c0ef909b..564268fca07a 100644 --- a/drivers/usb/misc/adutux.c +++ b/drivers/usb/misc/adutux.c @@ -672,8 +672,7 @@ static int adu_probe(struct usb_interface *interface, /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(struct adu_device), GFP_KERNEL); - if (dev == NULL) { - dev_err(&interface->dev, "Out of memory\n"); + if (!dev) { retval = -ENOMEM; goto exit; } @@ -710,7 +709,6 @@ static int adu_probe(struct usb_interface *interface, dev->read_buffer_primary = kmalloc((4 * in_end_size), GFP_KERNEL); if (!dev->read_buffer_primary) { - dev_err(&interface->dev, "Couldn't allocate read_buffer_primary\n"); retval = -ENOMEM; goto error; } @@ -723,7 +721,6 @@ static int adu_probe(struct usb_interface *interface, dev->read_buffer_secondary = kmalloc((4 * in_end_size), GFP_KERNEL); if (!dev->read_buffer_secondary) { - dev_err(&interface->dev, "Couldn't allocate read_buffer_secondary\n"); retval = -ENOMEM; goto error; } @@ -735,29 +732,21 @@ static int adu_probe(struct usb_interface *interface, memset(dev->read_buffer_secondary + (3 * in_end_size), 'h', in_end_size); dev->interrupt_in_buffer = kmalloc(in_end_size, GFP_KERNEL); - if (!dev->interrupt_in_buffer) { - dev_err(&interface->dev, "Couldn't allocate interrupt_in_buffer\n"); + if (!dev->interrupt_in_buffer) goto error; - } /* debug code prime the buffer */ memset(dev->interrupt_in_buffer, 'i', in_end_size); dev->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->interrupt_in_urb) { - dev_err(&interface->dev, "Couldn't allocate interrupt_in_urb\n"); + if (!dev->interrupt_in_urb) goto error; - } dev->interrupt_out_buffer = kmalloc(out_end_size, GFP_KERNEL); - if (!dev->interrupt_out_buffer) { - dev_err(&interface->dev, "Couldn't allocate interrupt_out_buffer\n"); + if (!dev->interrupt_out_buffer) goto error; - } dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->interrupt_out_urb) { - dev_err(&interface->dev, "Couldn't allocate interrupt_out_urb\n"); + if (!dev->interrupt_out_urb) goto error; - } if (!usb_string(udev, udev->descriptor.iSerialNumber, dev->serial_number, sizeof(dev->serial_number))) { diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c index a0a3827b4aff..da5ff401a354 100644 --- a/drivers/usb/misc/appledisplay.c +++ b/drivers/usb/misc/appledisplay.c @@ -85,7 +85,6 @@ struct appledisplay { }; static atomic_t count_displays = ATOMIC_INIT(0); -static struct workqueue_struct *wq; static void appledisplay_complete(struct urb *urb) { @@ -122,7 +121,7 @@ static void appledisplay_complete(struct urb *urb) case ACD_BTN_BRIGHT_UP: case ACD_BTN_BRIGHT_DOWN: pdata->button_pressed = 1; - queue_delayed_work(wq, &pdata->work, 0); + schedule_delayed_work(&pdata->work, 0); break; case ACD_BTN_NONE: default: @@ -239,7 +238,6 @@ static int appledisplay_probe(struct usb_interface *iface, pdata = kzalloc(sizeof(struct appledisplay), GFP_KERNEL); if (!pdata) { retval = -ENOMEM; - dev_err(&iface->dev, "Out of memory\n"); goto error; } @@ -253,8 +251,6 @@ static int appledisplay_probe(struct usb_interface *iface, pdata->msgdata = kmalloc(ACD_MSG_BUFFER_LEN, GFP_KERNEL); if (!pdata->msgdata) { retval = -ENOMEM; - dev_err(&iface->dev, - "Allocating buffer for control messages failed\n"); goto error; } @@ -262,7 +258,6 @@ static int appledisplay_probe(struct usb_interface *iface, pdata->urb = usb_alloc_urb(0, GFP_KERNEL); if (!pdata->urb) { retval = -ENOMEM; - dev_err(&iface->dev, "Allocating URB failed\n"); goto error; } @@ -344,7 +339,7 @@ static void appledisplay_disconnect(struct usb_interface *iface) if (pdata) { usb_kill_urb(pdata->urb); - cancel_delayed_work(&pdata->work); + cancel_delayed_work_sync(&pdata->work); backlight_device_unregister(pdata->bd); usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN, pdata->urbdata, pdata->urb->transfer_dma); @@ -365,19 +360,11 @@ static struct usb_driver appledisplay_driver = { static int __init appledisplay_init(void) { - wq = create_singlethread_workqueue("appledisplay"); - if (!wq) { - printk(KERN_ERR "appledisplay: Could not create work queue\n"); - return -ENOMEM; - } - return usb_register(&appledisplay_driver); } static void __exit appledisplay_exit(void) { - flush_workqueue(wq); - destroy_workqueue(wq); usb_deregister(&appledisplay_driver); } diff --git a/drivers/usb/misc/cypress_cy7c63.c b/drivers/usb/misc/cypress_cy7c63.c index 402b94dd2531..5c93a888c40e 100644 --- a/drivers/usb/misc/cypress_cy7c63.c +++ b/drivers/usb/misc/cypress_cy7c63.c @@ -79,7 +79,6 @@ static int vendor_command(struct cypress *dev, unsigned char request, /* allocate some memory for the i/o buffer*/ iobuf = kzalloc(CYPRESS_MAX_REQSIZE, GFP_KERNEL); if (!iobuf) { - dev_err(&dev->udev->dev, "Out of memory!\n"); retval = -ENOMEM; goto error; } @@ -208,10 +207,8 @@ static int cypress_probe(struct usb_interface *interface, /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (dev == NULL) { - dev_err(&interface->dev, "Out of memory!\n"); + if (!dev) goto error_mem; - } dev->udev = usb_get_dev(interface_to_usbdev(interface)); diff --git a/drivers/usb/misc/cytherm.c b/drivers/usb/misc/cytherm.c index 9bab1a33bc16..9d8bb8dacdcd 100644 --- a/drivers/usb/misc/cytherm.c +++ b/drivers/usb/misc/cytherm.c @@ -101,10 +101,8 @@ static ssize_t set_brightness(struct device *dev, struct device_attribute *attr, int retval; buffer = kmalloc(8, GFP_KERNEL); - if (!buffer) { - dev_err(&cytherm->udev->dev, "out of memory\n"); + if (!buffer) return 0; - } cytherm->brightness = simple_strtoul(buf, NULL, 10); @@ -148,10 +146,8 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char int temp, sign; buffer = kmalloc(8, GFP_KERNEL); - if (!buffer) { - dev_err(&cytherm->udev->dev, "out of memory\n"); + if (!buffer) return 0; - } /* read temperature */ retval = vendor_command(cytherm->udev, READ_RAM, TEMP, 0, buffer, 8); @@ -192,10 +188,8 @@ static ssize_t show_button(struct device *dev, struct device_attribute *attr, ch unsigned char *buffer; buffer = kmalloc(8, GFP_KERNEL); - if (!buffer) { - dev_err(&cytherm->udev->dev, "out of memory\n"); + if (!buffer) return 0; - } /* check button */ retval = vendor_command(cytherm->udev, READ_RAM, BUTTON, 0, buffer, 8); @@ -230,10 +224,8 @@ static ssize_t show_port0(struct device *dev, struct device_attribute *attr, cha unsigned char *buffer; buffer = kmalloc(8, GFP_KERNEL); - if (!buffer) { - dev_err(&cytherm->udev->dev, "out of memory\n"); + if (!buffer) return 0; - } retval = vendor_command(cytherm->udev, READ_PORT, 0, 0, buffer, 8); if (retval) @@ -257,10 +249,8 @@ static ssize_t set_port0(struct device *dev, struct device_attribute *attr, cons int tmp; buffer = kmalloc(8, GFP_KERNEL); - if (!buffer) { - dev_err(&cytherm->udev->dev, "out of memory\n"); + if (!buffer) return 0; - } tmp = simple_strtoul(buf, NULL, 10); @@ -290,10 +280,8 @@ static ssize_t show_port1(struct device *dev, struct device_attribute *attr, cha unsigned char *buffer; buffer = kmalloc(8, GFP_KERNEL); - if (!buffer) { - dev_err(&cytherm->udev->dev, "out of memory\n"); + if (!buffer) return 0; - } retval = vendor_command(cytherm->udev, READ_PORT, 1, 0, buffer, 8); if (retval) @@ -317,10 +305,8 @@ static ssize_t set_port1(struct device *dev, struct device_attribute *attr, cons int tmp; buffer = kmalloc(8, GFP_KERNEL); - if (!buffer) { - dev_err(&cytherm->udev->dev, "out of memory\n"); + if (!buffer) return 0; - } tmp = simple_strtoul(buf, NULL, 10); @@ -351,10 +337,8 @@ static int cytherm_probe(struct usb_interface *interface, int retval = -ENOMEM; dev = kzalloc (sizeof(struct usb_cytherm), GFP_KERNEL); - if (dev == NULL) { - dev_err (&interface->dev, "Out of memory\n"); + if (!dev) goto error_mem; - } dev->udev = usb_get_dev(udev); diff --git a/drivers/usb/misc/ezusb.c b/drivers/usb/misc/ezusb.c index 947811bc8126..837208f14f86 100644 --- a/drivers/usb/misc/ezusb.c +++ b/drivers/usb/misc/ezusb.c @@ -22,7 +22,7 @@ struct ezusb_fx_type { unsigned short max_internal_adress; }; -static struct ezusb_fx_type ezusb_fx1 = { +static const struct ezusb_fx_type ezusb_fx1 = { .cpucs_reg = 0x7F92, .max_internal_adress = 0x1B3F, }; diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index 9b5b3b2281ca..9a82f8308ad7 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -61,9 +61,6 @@ module_param(distrust_firmware, bool, 0); MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurrent setup"); extern struct platform_driver u132_platform_driver; -static struct workqueue_struct *status_queue; -static struct workqueue_struct *command_queue; -static struct workqueue_struct *respond_queue; /* * ftdi_module_lock exists to protect access to global variables * @@ -228,56 +225,56 @@ static void ftdi_elan_init_kref(struct usb_ftdi *ftdi) static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) { - if (!queue_delayed_work(status_queue, &ftdi->status_work, delta)) + if (!schedule_delayed_work(&ftdi->status_work, delta)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta) { - if (queue_delayed_work(status_queue, &ftdi->status_work, delta)) + if (schedule_delayed_work(&ftdi->status_work, delta)) kref_get(&ftdi->kref); } static void ftdi_status_cancel_work(struct usb_ftdi *ftdi) { - if (cancel_delayed_work(&ftdi->status_work)) + if (cancel_delayed_work_sync(&ftdi->status_work)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) { - if (!queue_delayed_work(command_queue, &ftdi->command_work, delta)) + if (!schedule_delayed_work(&ftdi->command_work, delta)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta) { - if (queue_delayed_work(command_queue, &ftdi->command_work, delta)) + if (schedule_delayed_work(&ftdi->command_work, delta)) kref_get(&ftdi->kref); } static void ftdi_command_cancel_work(struct usb_ftdi *ftdi) { - if (cancel_delayed_work(&ftdi->command_work)) + if (cancel_delayed_work_sync(&ftdi->command_work)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_response_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) { - if (!queue_delayed_work(respond_queue, &ftdi->respond_work, delta)) + if (!schedule_delayed_work(&ftdi->respond_work, delta)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta) { - if (queue_delayed_work(respond_queue, &ftdi->respond_work, delta)) + if (schedule_delayed_work(&ftdi->respond_work, delta)) kref_get(&ftdi->kref); } static void ftdi_response_cancel_work(struct usb_ftdi *ftdi) { - if (cancel_delayed_work(&ftdi->respond_work)) + if (cancel_delayed_work_sync(&ftdi->respond_work)) kref_put(&ftdi->kref, ftdi_elan_delete); } @@ -785,11 +782,8 @@ static int ftdi_elan_command_engine(struct usb_ftdi *ftdi) return 0; total_size = ftdi_elan_total_command_size(ftdi, command_size); urb = usb_alloc_urb(0, GFP_KERNEL); - if (!urb) { - dev_err(&ftdi->udev->dev, "could not get a urb to write %d commands totaling %d bytes to the Uxxx\n", - command_size, total_size); + if (!urb) return -ENOMEM; - } buf = usb_alloc_coherent(ftdi->udev, total_size, GFP_KERNEL, &urb->transfer_dma); if (!buf) { @@ -1948,10 +1942,8 @@ static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi) int I = 257; int i = 0; urb = usb_alloc_urb(0, GFP_KERNEL); - if (!urb) { - dev_err(&ftdi->udev->dev, "could not alloc a urb for flush sequence\n"); + if (!urb) return -ENOMEM; - } buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); if (!buf) { dev_err(&ftdi->udev->dev, "could not get a buffer for flush sequence\n"); @@ -1988,10 +1980,8 @@ static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi) int I = 4; int i = 0; urb = usb_alloc_urb(0, GFP_KERNEL); - if (!urb) { - dev_err(&ftdi->udev->dev, "could not get a urb for the reset sequence\n"); + if (!urb) return -ENOMEM; - } buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); if (!buf) { dev_err(&ftdi->udev->dev, "could not get a buffer for the reset sequence\n"); @@ -2740,7 +2730,6 @@ static int ftdi_elan_probe(struct usb_interface *interface, ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress; ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); if (!ftdi->bulk_in_buffer) { - dev_err(&ftdi->udev->dev, "Could not allocate bulk_in_buffer\n"); retval = -ENOMEM; goto error; } @@ -2823,9 +2812,6 @@ static void ftdi_elan_disconnect(struct usb_interface *interface) ftdi->initialized = 0; ftdi->registered = 0; } - flush_workqueue(status_queue); - flush_workqueue(command_queue); - flush_workqueue(respond_queue); ftdi->disconnected += 1; usb_set_intfdata(interface, NULL); dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller interface now disconnected\n"); @@ -2845,31 +2831,12 @@ static int __init ftdi_elan_init(void) pr_info("driver %s\n", ftdi_elan_driver.name); mutex_init(&ftdi_module_lock); INIT_LIST_HEAD(&ftdi_static_list); - status_queue = create_singlethread_workqueue("ftdi-status-control"); - if (!status_queue) - goto err_status_queue; - command_queue = create_singlethread_workqueue("ftdi-command-engine"); - if (!command_queue) - goto err_command_queue; - respond_queue = create_singlethread_workqueue("ftdi-respond-engine"); - if (!respond_queue) - goto err_respond_queue; result = usb_register(&ftdi_elan_driver); if (result) { - destroy_workqueue(status_queue); - destroy_workqueue(command_queue); - destroy_workqueue(respond_queue); pr_err("usb_register failed. Error number %d\n", result); } return result; -err_respond_queue: - destroy_workqueue(command_queue); -err_command_queue: - destroy_workqueue(status_queue); -err_status_queue: - pr_err("%s couldn't create workqueue\n", ftdi_elan_driver.name); - return -ENOMEM; } static void __exit ftdi_elan_exit(void) @@ -2882,15 +2849,7 @@ static void __exit ftdi_elan_exit(void) ftdi_status_cancel_work(ftdi); ftdi_command_cancel_work(ftdi); ftdi_response_cancel_work(ftdi); - } flush_workqueue(status_queue); - destroy_workqueue(status_queue); - status_queue = NULL; - flush_workqueue(command_queue); - destroy_workqueue(command_queue); - command_queue = NULL; - flush_workqueue(respond_queue); - destroy_workqueue(respond_queue); - respond_queue = NULL; + } } diff --git a/drivers/usb/misc/idmouse.c b/drivers/usb/misc/idmouse.c index 5105397e62fc..2975e80b7a56 100644 --- a/drivers/usb/misc/idmouse.c +++ b/drivers/usb/misc/idmouse.c @@ -366,7 +366,6 @@ static int idmouse_probe(struct usb_interface *interface, kmalloc(IMGSIZE + dev->bulk_in_size, GFP_KERNEL); if (!dev->bulk_in_buffer) { - dev_err(&interface->dev, "Unable to allocate input buffer.\n"); idmouse_delete(dev); return -ENOMEM; } diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index 1950e87b4219..095778ff984d 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -278,7 +278,7 @@ static ssize_t iowarrior_read(struct file *file, char __user *buffer, dev = file->private_data; /* verify that the device wasn't unplugged */ - if (dev == NULL || !dev->present) + if (!dev || !dev->present) return -ENODEV; dev_dbg(&dev->interface->dev, "minor %d, count = %zd\n", @@ -413,8 +413,6 @@ static ssize_t iowarrior_write(struct file *file, int_out_urb = usb_alloc_urb(0, GFP_KERNEL); if (!int_out_urb) { retval = -ENOMEM; - dev_dbg(&dev->interface->dev, - "Unable to allocate urb\n"); goto error_no_urb; } buf = usb_alloc_coherent(dev->udev, dev->report_size, @@ -482,9 +480,8 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd, int io_res; /* checks for bytes read/written and copy_to/from_user results */ dev = file->private_data; - if (dev == NULL) { + if (!dev) return -ENODEV; - } buffer = kzalloc(dev->report_size, GFP_KERNEL); if (!buffer) @@ -654,9 +651,8 @@ static int iowarrior_release(struct inode *inode, struct file *file) int retval = 0; dev = file->private_data; - if (dev == NULL) { + if (!dev) return -ENODEV; - } dev_dbg(&dev->interface->dev, "minor %d\n", dev->minor); @@ -766,10 +762,8 @@ static int iowarrior_probe(struct usb_interface *interface, /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(struct iowarrior), GFP_KERNEL); - if (dev == NULL) { - dev_err(&interface->dev, "Out of memory\n"); + if (!dev) return retval; - } mutex_init(&dev->mutex); @@ -812,15 +806,11 @@ static int iowarrior_probe(struct usb_interface *interface, /* create the urb and buffer for reading */ dev->int_in_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->int_in_urb) { - dev_err(&interface->dev, "Couldn't allocate interrupt_in_urb\n"); + if (!dev->int_in_urb) goto error; - } dev->int_in_buffer = kmalloc(dev->report_size, GFP_KERNEL); - if (!dev->int_in_buffer) { - dev_err(&interface->dev, "Couldn't allocate int_in_buffer\n"); + if (!dev->int_in_buffer) goto error; - } usb_fill_int_urb(dev->int_in_urb, dev->udev, usb_rcvintpipe(dev->udev, dev->int_in_endpoint->bEndpointAddress), @@ -831,10 +821,8 @@ static int iowarrior_probe(struct usb_interface *interface, dev->read_queue = kmalloc(((dev->report_size + 1) * MAX_INTERRUPT_BUFFER), GFP_KERNEL); - if (!dev->read_queue) { - dev_err(&interface->dev, "Couldn't allocate read_queue\n"); + if (!dev->read_queue) goto error; - } /* Get the serial-number of the chip */ memset(dev->chip_serial, 0x00, sizeof(dev->chip_serial)); usb_string(udev, udev->descriptor.iSerialNumber, dev->chip_serial, diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index cce22ff1c2eb..9ca595632f17 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -658,10 +658,8 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (dev == NULL) { - dev_err(&intf->dev, "Out of memory\n"); + if (!dev) goto exit; - } mutex_init(&dev->mutex); spin_lock_init(&dev->rbsl); dev->intf = intf; @@ -674,10 +672,8 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * (le16_to_cpu(udev->descriptor.idProduct) == USB_DEVICE_ID_LD_COM3LAB)) && (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x103)) { buffer = kmalloc(256, GFP_KERNEL); - if (buffer == NULL) { - dev_err(&intf->dev, "Couldn't allocate string buffer\n"); + if (!buffer) goto error; - } /* usb_string makes SETUP+STALL to leave always ControlReadLoop */ usb_string(udev, 255, buffer, 256); kfree(buffer); @@ -704,32 +700,22 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint); dev->ring_buffer = kmalloc(ring_buffer_size*(sizeof(size_t)+dev->interrupt_in_endpoint_size), GFP_KERNEL); - if (!dev->ring_buffer) { - dev_err(&intf->dev, "Couldn't allocate ring_buffer\n"); + if (!dev->ring_buffer) goto error; - } dev->interrupt_in_buffer = kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL); - if (!dev->interrupt_in_buffer) { - dev_err(&intf->dev, "Couldn't allocate interrupt_in_buffer\n"); + if (!dev->interrupt_in_buffer) goto error; - } dev->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->interrupt_in_urb) { - dev_err(&intf->dev, "Couldn't allocate interrupt_in_urb\n"); + if (!dev->interrupt_in_urb) goto error; - } dev->interrupt_out_endpoint_size = dev->interrupt_out_endpoint ? usb_endpoint_maxp(dev->interrupt_out_endpoint) : udev->descriptor.bMaxPacketSize0; dev->interrupt_out_buffer = kmalloc(write_buffer_size*dev->interrupt_out_endpoint_size, GFP_KERNEL); - if (!dev->interrupt_out_buffer) { - dev_err(&intf->dev, "Couldn't allocate interrupt_out_buffer\n"); + if (!dev->interrupt_out_buffer) goto error; - } dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->interrupt_out_urb) { - dev_err(&intf->dev, "Couldn't allocate interrupt_out_urb\n"); + if (!dev->interrupt_out_urb) goto error; - } dev->interrupt_in_interval = min_interrupt_in_interval > dev->interrupt_in_endpoint->bInterval ? min_interrupt_in_interval : dev->interrupt_in_endpoint->bInterval; if (dev->interrupt_out_endpoint) dev->interrupt_out_interval = min_interrupt_out_interval > dev->interrupt_out_endpoint->bInterval ? min_interrupt_out_interval : dev->interrupt_out_endpoint->bInterval; diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index 7771be3ac178..ece9b3c1eaac 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -817,10 +817,8 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device dev = kmalloc (sizeof(struct lego_usb_tower), GFP_KERNEL); - if (dev == NULL) { - dev_err(idev, "Out of memory\n"); + if (!dev) goto exit; - } mutex_init(&dev->lock); @@ -871,30 +869,20 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device } dev->read_buffer = kmalloc (read_buffer_size, GFP_KERNEL); - if (!dev->read_buffer) { - dev_err(idev, "Couldn't allocate read_buffer\n"); + if (!dev->read_buffer) goto error; - } dev->interrupt_in_buffer = kmalloc (usb_endpoint_maxp(dev->interrupt_in_endpoint), GFP_KERNEL); - if (!dev->interrupt_in_buffer) { - dev_err(idev, "Couldn't allocate interrupt_in_buffer\n"); + if (!dev->interrupt_in_buffer) goto error; - } dev->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->interrupt_in_urb) { - dev_err(idev, "Couldn't allocate interrupt_in_urb\n"); + if (!dev->interrupt_in_urb) goto error; - } dev->interrupt_out_buffer = kmalloc (write_buffer_size, GFP_KERNEL); - if (!dev->interrupt_out_buffer) { - dev_err(idev, "Couldn't allocate interrupt_out_buffer\n"); + if (!dev->interrupt_out_buffer) goto error; - } dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->interrupt_out_urb) { - dev_err(idev, "Couldn't allocate interrupt_out_urb\n"); + if (!dev->interrupt_out_urb) goto error; - } dev->interrupt_in_interval = interrupt_in_interval ? interrupt_in_interval : dev->interrupt_in_endpoint->bInterval; dev->interrupt_out_interval = interrupt_out_interval ? interrupt_out_interval : dev->interrupt_out_endpoint->bInterval; diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c index 86b4e4b2ab9a..77176511658f 100644 --- a/drivers/usb/misc/lvstest.c +++ b/drivers/usb/misc/lvstest.c @@ -34,8 +34,6 @@ struct lvs_rh { struct usb_hub_descriptor descriptor; /* urb for polling interrupt pipe */ struct urb *urb; - /* LVS RH work queue */ - struct workqueue_struct *rh_queue; /* LVH RH work */ struct work_struct rh_work; /* RH port status */ @@ -247,10 +245,8 @@ static ssize_t get_dev_desc_store(struct device *dev, int ret; descriptor = kmalloc(sizeof(*descriptor), GFP_KERNEL); - if (!descriptor) { - dev_err(dev, "failed to allocate descriptor memory\n"); + if (!descriptor) return -ENOMEM; - } udev = create_lvs_device(intf); if (!udev) { @@ -355,7 +351,7 @@ static void lvs_rh_irq(struct urb *urb) { struct lvs_rh *lvs = urb->context; - queue_work(lvs->rh_queue, &lvs->rh_work); + schedule_work(&lvs->rh_work); } static int lvs_rh_probe(struct usb_interface *intf, @@ -397,24 +393,15 @@ static int lvs_rh_probe(struct usb_interface *intf, /* submit urb to poll interrupt endpoint */ lvs->urb = usb_alloc_urb(0, GFP_KERNEL); - if (!lvs->urb) { - dev_err(&intf->dev, "couldn't allocate lvs urb\n"); + if (!lvs->urb) return -ENOMEM; - } - - lvs->rh_queue = create_singlethread_workqueue("lvs_rh_queue"); - if (!lvs->rh_queue) { - dev_err(&intf->dev, "couldn't create workqueue\n"); - ret = -ENOMEM; - goto free_urb; - } INIT_WORK(&lvs->rh_work, lvs_rh_work); ret = sysfs_create_group(&intf->dev.kobj, &lvs_attr_group); if (ret < 0) { dev_err(&intf->dev, "Failed to create sysfs node %d\n", ret); - goto destroy_queue; + goto free_urb; } pipe = usb_rcvintpipe(hdev, endpoint->bEndpointAddress); @@ -432,8 +419,6 @@ static int lvs_rh_probe(struct usb_interface *intf, sysfs_remove: sysfs_remove_group(&intf->dev.kobj, &lvs_attr_group); -destroy_queue: - destroy_workqueue(lvs->rh_queue); free_urb: usb_free_urb(lvs->urb); return ret; @@ -444,7 +429,7 @@ static void lvs_rh_disconnect(struct usb_interface *intf) struct lvs_rh *lvs = usb_get_intfdata(intf); sysfs_remove_group(&intf->dev.kobj, &lvs_attr_group); - destroy_workqueue(lvs->rh_queue); + flush_work(&lvs->rh_work); usb_free_urb(lvs->urb); } diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index 02abfcdfbf7b..05bd39d62568 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -3084,7 +3084,6 @@ static int sisusb_probe(struct usb_interface *intf, /* Allocate URBs */ sisusb->sisurbin = usb_alloc_urb(0, GFP_KERNEL); if (!sisusb->sisurbin) { - dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate URBs\n"); retval = -ENOMEM; goto error_3; } @@ -3093,8 +3092,6 @@ static int sisusb_probe(struct usb_interface *intf, for (i = 0; i < sisusb->numobufs; i++) { sisusb->sisurbout[i] = usb_alloc_urb(0, GFP_KERNEL); if (!sisusb->sisurbout[i]) { - dev_err(&sisusb->sisusb_dev->dev, - "Failed to allocate URBs\n"); retval = -ENOMEM; goto error_4; } diff --git a/drivers/usb/misc/trancevibrator.c b/drivers/usb/misc/trancevibrator.c index 4145314a515b..9795457723d8 100644 --- a/drivers/usb/misc/trancevibrator.c +++ b/drivers/usb/misc/trancevibrator.c @@ -95,8 +95,7 @@ static int tv_probe(struct usb_interface *interface, int retval; dev = kzalloc(sizeof(struct trancevibrator), GFP_KERNEL); - if (dev == NULL) { - dev_err(&interface->dev, "Out of memory\n"); + if (!dev) { retval = -ENOMEM; goto error; } diff --git a/drivers/usb/misc/usb4604.c b/drivers/usb/misc/usb4604.c new file mode 100644 index 000000000000..e9f37fb746ac --- /dev/null +++ b/drivers/usb/misc/usb4604.c @@ -0,0 +1,175 @@ +/* + * Driver for SMSC USB4604 USB HSIC 4-port 2.0 hub controller driver + * Based on usb3503 driver + * + * Copyright (c) 2012-2013 Dongjin Kim (tobetter@gmail.com) + * Copyright (c) 2016 Linaro Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/i2c.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/gpio/consumer.h> + +enum usb4604_mode { + USB4604_MODE_UNKNOWN, + USB4604_MODE_HUB, + USB4604_MODE_STANDBY, +}; + +struct usb4604 { + enum usb4604_mode mode; + struct device *dev; + struct gpio_desc *gpio_reset; +}; + +static void usb4604_reset(struct usb4604 *hub, int state) +{ + gpiod_set_value_cansleep(hub->gpio_reset, state); + + /* Wait for i2c logic to come up */ + if (state) + msleep(250); +} + +static int usb4604_connect(struct usb4604 *hub) +{ + struct device *dev = hub->dev; + struct i2c_client *client = to_i2c_client(dev); + int err; + u8 connect_cmd[] = { 0xaa, 0x55, 0x00 }; + + usb4604_reset(hub, 1); + + err = i2c_master_send(client, connect_cmd, ARRAY_SIZE(connect_cmd)); + if (err < 0) { + usb4604_reset(hub, 0); + return err; + } + + hub->mode = USB4604_MODE_HUB; + dev_dbg(dev, "switched to HUB mode\n"); + + return 0; +} + +static int usb4604_switch_mode(struct usb4604 *hub, enum usb4604_mode mode) +{ + struct device *dev = hub->dev; + int err = 0; + + switch (mode) { + case USB4604_MODE_HUB: + err = usb4604_connect(hub); + break; + + case USB4604_MODE_STANDBY: + usb4604_reset(hub, 0); + dev_dbg(dev, "switched to STANDBY mode\n"); + break; + + default: + dev_err(dev, "unknown mode is requested\n"); + err = -EINVAL; + break; + } + + return err; +} + +static int usb4604_probe(struct usb4604 *hub) +{ + struct device *dev = hub->dev; + struct device_node *np = dev->of_node; + struct gpio_desc *gpio; + u32 mode = USB4604_MODE_HUB; + + gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(gpio)) + return PTR_ERR(gpio); + hub->gpio_reset = gpio; + + if (of_property_read_u32(np, "initial-mode", &hub->mode)) + hub->mode = mode; + + return usb4604_switch_mode(hub, hub->mode); +} + +static int usb4604_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct usb4604 *hub; + + hub = devm_kzalloc(&i2c->dev, sizeof(*hub), GFP_KERNEL); + if (!hub) + return -ENOMEM; + + i2c_set_clientdata(i2c, hub); + hub->dev = &i2c->dev; + + return usb4604_probe(hub); +} + +#ifdef CONFIG_PM_SLEEP +static int usb4604_i2c_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct usb4604 *hub = i2c_get_clientdata(client); + + usb4604_switch_mode(hub, USB4604_MODE_STANDBY); + + return 0; +} + +static int usb4604_i2c_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct usb4604 *hub = i2c_get_clientdata(client); + + usb4604_switch_mode(hub, hub->mode); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(usb4604_i2c_pm_ops, usb4604_i2c_suspend, + usb4604_i2c_resume); + +static const struct i2c_device_id usb4604_id[] = { + { "usb4604", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, usb4604_id); + +#ifdef CONFIG_OF +static const struct of_device_id usb4604_of_match[] = { + { .compatible = "smsc,usb4604" }, + {} +}; +MODULE_DEVICE_TABLE(of, usb4604_of_match); +#endif + +static struct i2c_driver usb4604_i2c_driver = { + .driver = { + .name = "usb4604", + .pm = &usb4604_i2c_pm_ops, + .of_match_table = of_match_ptr(usb4604_of_match), + }, + .probe = usb4604_i2c_probe, + .id_table = usb4604_id, +}; +module_i2c_driver(usb4604_i2c_driver); + +MODULE_DESCRIPTION("USB4604 USB HUB driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c index 1184390508e9..9f48419abc46 100644 --- a/drivers/usb/misc/usblcd.c +++ b/drivers/usb/misc/usblcd.c @@ -321,10 +321,8 @@ static int lcd_probe(struct usb_interface *interface, /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (dev == NULL) { - dev_err(&interface->dev, "Out of memory\n"); + if (!dev) goto error; - } kref_init(&dev->kref); sema_init(&dev->limit_sem, USB_LCD_CONCURRENT_WRITES); init_usb_anchor(&dev->submitted); @@ -351,11 +349,8 @@ static int lcd_probe(struct usb_interface *interface, dev->bulk_in_size = buffer_size; dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!dev->bulk_in_buffer) { - dev_err(&interface->dev, - "Could not allocate bulk_in_buffer\n"); + if (!dev->bulk_in_buffer) goto error; - } } if (!dev->bulk_out_endpointAddr && diff --git a/drivers/usb/misc/usbsevseg.c b/drivers/usb/misc/usbsevseg.c index 1fe6b73c22f3..a0ba5298160c 100644 --- a/drivers/usb/misc/usbsevseg.c +++ b/drivers/usb/misc/usbsevseg.c @@ -128,10 +128,8 @@ static void update_display_visual(struct usb_sevsegdev *mydev, gfp_t mf) return; buffer = kzalloc(MAXLEN, mf); - if (!buffer) { - dev_err(&mydev->udev->dev, "out of memory\n"); + if (!buffer) return; - } /* The device is right to left, where as you write left to right */ for (i = 0; i < mydev->textlength; i++) @@ -346,10 +344,8 @@ static int sevseg_probe(struct usb_interface *interface, int rc = -ENOMEM; mydev = kzalloc(sizeof(struct usb_sevsegdev), GFP_KERNEL); - if (mydev == NULL) { - dev_err(&interface->dev, "Out of memory\n"); + if (!mydev) goto error_mem; - } mydev->udev = usb_get_dev(udev); mydev->intf = interface; diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index bbd029c9c725..356d312add57 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -150,10 +150,8 @@ static struct uss720_async_request *submit_async_request(struct parport_uss720_p if (!usbdev) return NULL; rq = kzalloc(sizeof(struct uss720_async_request), mem_flags); - if (!rq) { - dev_err(&usbdev->dev, "submit_async_request out of memory\n"); + if (!rq) return NULL; - } kref_init(&rq->ref_count); INIT_LIST_HEAD(&rq->asynclist); init_completion(&rq->compl); @@ -162,7 +160,6 @@ static struct uss720_async_request *submit_async_request(struct parport_uss720_p rq->urb = usb_alloc_urb(0, mem_flags); if (!rq->urb) { kref_put(&rq->ref_count, destroy_async); - dev_err(&usbdev->dev, "submit_async_request out of memory\n"); return NULL; } rq->dr = kmalloc(sizeof(*rq->dr), mem_flags); diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index 343fa6ff9f4b..54e53ac4c08f 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -200,10 +200,8 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) { - dev_err(&interface->dev, "Out of memory\n"); + if (!dev) goto error; - } kref_init(&dev->kref); mutex_init(&dev->io_mutex); spin_lock_init(&dev->lock); @@ -231,17 +229,13 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ /* allocate control URB */ dev->cntl_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->cntl_urb) { - dev_err(&interface->dev, "Could not allocate control URB\n"); + if (!dev->cntl_urb) goto error; - } /* allocate buffer for control req */ dev->cntl_req = kmalloc(YUREX_BUF_SIZE, GFP_KERNEL); - if (!dev->cntl_req) { - dev_err(&interface->dev, "Could not allocate cntl_req\n"); + if (!dev->cntl_req) goto error; - } /* allocate buffer for control msg */ dev->cntl_buffer = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE, @@ -269,10 +263,8 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ /* allocate interrupt URB */ dev->urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->urb) { - dev_err(&interface->dev, "Could not allocate URB\n"); + if (!dev->urb) goto error; - } /* allocate buffer for interrupt in */ dev->int_buffer = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE, diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 886526b5fcdd..c73221a819c8 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -82,7 +82,7 @@ config USB_MUSB_DA8XX tristate "DA8xx/OMAP-L1x" depends on ARCH_DAVINCI_DA8XX depends on NOP_USB_XCEIV - depends on BROKEN + select PHY_DA8XX_USB config USB_MUSB_TUSB6010 tristate "TUSB6010" diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c index c41fe588d14d..50ca8052bc8e 100644 --- a/drivers/usb/musb/am35x.c +++ b/drivers/usb/musb/am35x.c @@ -474,10 +474,8 @@ static int am35x_probe(struct platform_device *pdev) int ret = -ENOMEM; glue = kzalloc(sizeof(*glue), GFP_KERNEL); - if (!glue) { - dev_err(&pdev->dev, "failed to allocate glue context\n"); + if (!glue) goto err0; - } phy_clk = clk_get(&pdev->dev, "fck"); if (IS_ERR(phy_clk)) { @@ -512,8 +510,10 @@ static int am35x_probe(struct platform_device *pdev) pdata->platform_ops = &am35x_ops; glue->phy = usb_phy_generic_register(); - if (IS_ERR(glue->phy)) + if (IS_ERR(glue->phy)) { + ret = PTR_ERR(glue->phy); goto err7; + } platform_set_drvdata(pdev, glue); pinfo = am35x_dev_info; diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index b03d3b867fca..2358f636e48c 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -30,13 +30,11 @@ #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> +#include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/usb/usb_phy_generic.h> -#include <mach/da8xx.h> -#include <linux/platform_data/usb-davinci.h> - #include "musb_core.h" /* @@ -80,61 +78,15 @@ #define DA8XX_MENTOR_CORE_OFFSET 0x400 -#define CFGCHIP2 IO_ADDRESS(DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP2_REG) - struct da8xx_glue { struct device *dev; struct platform_device *musb; - struct platform_device *phy; + struct platform_device *usb_phy; struct clk *clk; + struct phy *phy; }; /* - * REVISIT (PM): we should be able to keep the PHY in low power mode most - * of the time (24 MHz oscillator and PLL off, etc.) by setting POWER.D0 - * and, when in host mode, autosuspending idle root ports... PHY_PLLON - * (overriding SUSPENDM?) then likely needs to stay off. - */ - -static inline void phy_on(void) -{ - u32 cfgchip2 = __raw_readl(CFGCHIP2); - - /* - * Start the on-chip PHY and its PLL. - */ - cfgchip2 &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN); - cfgchip2 |= CFGCHIP2_PHY_PLLON; - __raw_writel(cfgchip2, CFGCHIP2); - - pr_info("Waiting for USB PHY clock good...\n"); - while (!(__raw_readl(CFGCHIP2) & CFGCHIP2_PHYCLKGD)) - cpu_relax(); -} - -static inline void phy_off(void) -{ - u32 cfgchip2 = __raw_readl(CFGCHIP2); - - /* - * Ensure that USB 1.1 reference clock is not being sourced from - * USB 2.0 PHY. Otherwise do not power down the PHY. - */ - if (!(cfgchip2 & CFGCHIP2_USB1PHYCLKMUX) && - (cfgchip2 & CFGCHIP2_USB1SUSPENDM)) { - pr_warning("USB 1.1 clocked from USB 2.0 PHY -- " - "can't power it down\n"); - return; - } - - /* - * Power down the on-chip PHY. - */ - cfgchip2 |= CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN; - __raw_writel(cfgchip2, CFGCHIP2); -} - -/* * Because we don't set CTRL.UINT, it's "important" to: * - not read/write INTRUSB/INTRUSBE (except during * initial setup, as a workaround); @@ -385,29 +337,29 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci) static int da8xx_musb_set_mode(struct musb *musb, u8 musb_mode) { - u32 cfgchip2 = __raw_readl(CFGCHIP2); + struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent); + enum phy_mode phy_mode; - cfgchip2 &= ~CFGCHIP2_OTGMODE; switch (musb_mode) { case MUSB_HOST: /* Force VBUS valid, ID = 0 */ - cfgchip2 |= CFGCHIP2_FORCE_HOST; + phy_mode = PHY_MODE_USB_HOST; break; case MUSB_PERIPHERAL: /* Force VBUS valid, ID = 1 */ - cfgchip2 |= CFGCHIP2_FORCE_DEVICE; + phy_mode = PHY_MODE_USB_DEVICE; break; case MUSB_OTG: /* Don't override the VBUS/ID comparators */ - cfgchip2 |= CFGCHIP2_NO_OVERRIDE; + phy_mode = PHY_MODE_USB_OTG; break; default: - dev_dbg(musb->controller, "Trying to set unsupported mode %u\n", musb_mode); + return -EINVAL; } - __raw_writel(cfgchip2, CFGCHIP2); - return 0; + return phy_set_mode(glue->phy, phy_mode); } static int da8xx_musb_init(struct musb *musb) { + struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent); void __iomem *reg_base = musb->ctrl_base; u32 rev; int ret = -ENODEV; @@ -425,32 +377,56 @@ static int da8xx_musb_init(struct musb *musb) goto fail; } + ret = clk_prepare_enable(glue->clk); + if (ret) { + dev_err(glue->dev, "failed to enable clock\n"); + goto fail; + } + setup_timer(&otg_workaround, otg_timer, (unsigned long)musb); /* Reset the controller */ musb_writel(reg_base, DA8XX_USB_CTRL_REG, DA8XX_SOFT_RESET_MASK); /* Start the on-chip PHY and its PLL. */ - phy_on(); + ret = phy_init(glue->phy); + if (ret) { + dev_err(glue->dev, "Failed to init phy.\n"); + goto err_phy_init; + } + + ret = phy_power_on(glue->phy); + if (ret) { + dev_err(glue->dev, "Failed to power on phy.\n"); + goto err_phy_power_on; + } msleep(5); /* NOTE: IRQs are in mixed mode, not bypass to pure MUSB */ - pr_debug("DA8xx OTG revision %08x, PHY %03x, control %02x\n", - rev, __raw_readl(CFGCHIP2), + pr_debug("DA8xx OTG revision %08x, control %02x\n", rev, musb_readb(reg_base, DA8XX_USB_CTRL_REG)); musb->isr = da8xx_musb_interrupt; return 0; + +err_phy_power_on: + phy_exit(glue->phy); +err_phy_init: + clk_disable_unprepare(glue->clk); fail: return ret; } static int da8xx_musb_exit(struct musb *musb) { + struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent); + del_timer_sync(&otg_workaround); - phy_off(); + phy_power_off(glue->phy); + phy_exit(glue->phy); + clk_disable_unprepare(glue->clk); usb_put_phy(musb->xceiv); @@ -490,26 +466,22 @@ static int da8xx_probe(struct platform_device *pdev) struct da8xx_glue *glue; struct platform_device_info pinfo; struct clk *clk; + int ret; - int ret = -ENOMEM; + glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); + if (!glue) + return -ENOMEM; - glue = kzalloc(sizeof(*glue), GFP_KERNEL); - if (!glue) { - dev_err(&pdev->dev, "failed to allocate glue context\n"); - goto err0; - } - - clk = clk_get(&pdev->dev, "usb20"); + clk = devm_clk_get(&pdev->dev, "usb20"); if (IS_ERR(clk)) { dev_err(&pdev->dev, "failed to get clock\n"); - ret = PTR_ERR(clk); - goto err3; + return PTR_ERR(clk); } - ret = clk_enable(clk); - if (ret) { - dev_err(&pdev->dev, "failed to enable clock\n"); - goto err4; + glue->phy = devm_phy_get(&pdev->dev, "usb-phy"); + if (IS_ERR(glue->phy)) { + dev_err(&pdev->dev, "failed to get phy\n"); + return PTR_ERR(glue->phy); } glue->dev = &pdev->dev; @@ -517,10 +489,10 @@ static int da8xx_probe(struct platform_device *pdev) pdata->platform_ops = &da8xx_ops; - glue->phy = usb_phy_generic_register(); - if (IS_ERR(glue->phy)) { - ret = PTR_ERR(glue->phy); - goto err5; + glue->usb_phy = usb_phy_generic_register(); + if (IS_ERR(glue->usb_phy)) { + dev_err(&pdev->dev, "failed to register usb_phy\n"); + return PTR_ERR(glue->usb_phy); } platform_set_drvdata(pdev, glue); @@ -546,27 +518,12 @@ static int da8xx_probe(struct platform_device *pdev) glue->musb = musb = platform_device_register_full(&pinfo); if (IS_ERR(musb)) { - ret = PTR_ERR(musb); dev_err(&pdev->dev, "failed to register musb device: %d\n", ret); - goto err6; + usb_phy_generic_unregister(glue->usb_phy); + return PTR_ERR(musb); } return 0; - -err6: - usb_phy_generic_unregister(glue->phy); - -err5: - clk_disable(clk); - -err4: - clk_put(clk); - -err3: - kfree(glue); - -err0: - return ret; } static int da8xx_remove(struct platform_device *pdev) @@ -574,10 +531,7 @@ static int da8xx_remove(struct platform_device *pdev) struct da8xx_glue *glue = platform_get_drvdata(pdev); platform_device_unregister(glue->musb); - usb_phy_generic_unregister(glue->phy); - clk_disable(glue->clk); - clk_put(glue->clk); - kfree(glue); + usb_phy_generic_unregister(glue->usb_phy); return 0; } diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 74fc3069cb42..0319ea67e5a1 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1448,7 +1448,7 @@ static int musb_core_init(u16 musb_type, struct musb *musb) { u8 reg; char *type; - char aInfo[90], aRevision[32], aDate[12]; + char aInfo[90]; void __iomem *mbase = musb->mregs; int status = 0; int i; @@ -1482,7 +1482,6 @@ static int musb_core_init(u16 musb_type, struct musb *musb) pr_debug("%s: ConfigData=0x%02x (%s)\n", musb_driver_name, reg, aInfo); - aDate[0] = 0; if (MUSB_CONTROLLER_MHDRC == musb_type) { musb->is_multipoint = 1; type = "M"; @@ -1497,11 +1496,10 @@ static int musb_core_init(u16 musb_type, struct musb *musb) /* log release info */ musb->hwvers = musb_read_hwvers(mbase); - snprintf(aRevision, 32, "%d.%d%s", MUSB_HWVERS_MAJOR(musb->hwvers), - MUSB_HWVERS_MINOR(musb->hwvers), - (musb->hwvers & MUSB_HWVERS_RC) ? "RC" : ""); - pr_debug("%s: %sHDRC RTL version %s %s\n", - musb_driver_name, type, aRevision, aDate); + pr_debug("%s: %sHDRC RTL version %d.%d%s\n", + musb_driver_name, type, MUSB_HWVERS_MAJOR(musb->hwvers), + MUSB_HWVERS_MINOR(musb->hwvers), + (musb->hwvers & MUSB_HWVERS_RC) ? "RC" : ""); /* configure ep0 */ musb_configure_ep0(musb); @@ -1831,11 +1829,77 @@ static const struct attribute_group musb_attr_group = { .attrs = musb_attributes, }; +#define MUSB_QUIRK_B_INVALID_VBUS_91 (MUSB_DEVCTL_BDEVICE | \ + (2 << MUSB_DEVCTL_VBUS_SHIFT) | \ + MUSB_DEVCTL_SESSION) +#define MUSB_QUIRK_A_DISCONNECT_19 ((3 << MUSB_DEVCTL_VBUS_SHIFT) | \ + MUSB_DEVCTL_SESSION) + +/* + * Check the musb devctl session bit to determine if we want to + * allow PM runtime for the device. In general, we want to keep things + * active when the session bit is set except after host disconnect. + * + * Only called from musb_irq_work. If this ever needs to get called + * elsewhere, proper locking must be implemented for musb->session. + */ +static void musb_pm_runtime_check_session(struct musb *musb) +{ + u8 devctl, s; + int error; + + devctl = musb_readb(musb->mregs, MUSB_DEVCTL); + + /* Handle session status quirks first */ + s = MUSB_DEVCTL_FSDEV | MUSB_DEVCTL_LSDEV | + MUSB_DEVCTL_HR; + switch (devctl & ~s) { + case MUSB_QUIRK_B_INVALID_VBUS_91: + if (musb->session) + break; + musb_dbg(musb, "Allow PM as device with invalid vbus: %02x", + devctl); + return; + case MUSB_QUIRK_A_DISCONNECT_19: + if (!musb->session) + break; + musb_dbg(musb, "Allow PM on possible host mode disconnect"); + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); + musb->session = false; + return; + default: + break; + } + + /* No need to do anything if session has not changed */ + s = devctl & MUSB_DEVCTL_SESSION; + if (s == musb->session) + return; + + /* Block PM or allow PM? */ + if (s) { + musb_dbg(musb, "Block PM on active session: %02x", devctl); + error = pm_runtime_get_sync(musb->controller); + if (error < 0) + dev_err(musb->controller, "Could not enable: %i\n", + error); + } else { + musb_dbg(musb, "Allow PM with no session: %02x", devctl); + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); + } + + musb->session = s; +} + /* Only used to provide driver mode change events */ static void musb_irq_work(struct work_struct *data) { struct musb *musb = container_of(data, struct musb, irq_work); + musb_pm_runtime_check_session(musb); + if (musb->xceiv->otg->state != musb->xceiv_old_state) { musb->xceiv_old_state = musb->xceiv->otg->state; sysfs_notify(&musb->controller->kobj, NULL, "mode"); diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index b55a776b03eb..65288a53c19b 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -378,6 +378,7 @@ struct musb { u8 min_power; /* vbus for periph, in mA/2 */ int port_mode; /* MUSB_PORT_MODE_* */ + bool session; bool is_host; int a_wait_bcon; /* VBUS timeout in msecs */ diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 2537179636db..0f17d2140db6 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -145,43 +145,6 @@ static const struct debugfs_reg32 dsps_musb_regs[] = { { "mode", 0xe8 }, }; -static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) -{ - struct device *dev = musb->controller; - struct dsps_glue *glue = dev_get_drvdata(dev->parent); - - if (timeout == 0) - timeout = jiffies + msecs_to_jiffies(3); - - /* Never idle if active, or when VBUS timeout is not set as host */ - if (musb->is_active || (musb->a_wait_bcon == 0 && - musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON)) { - dev_dbg(musb->controller, "%s active, deleting timer\n", - usb_otg_state_string(musb->xceiv->otg->state)); - del_timer(&glue->timer); - glue->last_timer = jiffies; - return; - } - if (musb->port_mode != MUSB_PORT_MODE_DUAL_ROLE) - return; - - if (!musb->g.dev.driver) - return; - - if (time_after(glue->last_timer, timeout) && - timer_pending(&glue->timer)) { - dev_dbg(musb->controller, - "Longer idle timer already pending, ignoring...\n"); - return; - } - glue->last_timer = timeout; - - dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n", - usb_otg_state_string(musb->xceiv->otg->state), - jiffies_to_msecs(timeout - jiffies)); - mod_timer(&glue->timer, timeout); -} - /** * dsps_musb_enable - enable interrupts */ @@ -206,7 +169,6 @@ static void dsps_musb_enable(struct musb *musb) musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) mod_timer(&glue->timer, jiffies + msecs_to_jiffies(wrp->poll_timeout)); - dsps_musb_try_idle(musb, 0); } /** @@ -236,6 +198,11 @@ static void otg_timer(unsigned long _musb) u8 devctl; unsigned long flags; int skip_session = 0; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) + dev_err(dev, "Poll could not pm_runtime_get: %i\n", err); /* * We poll because DSPS IP's won't expose several OTG-critical @@ -247,6 +214,10 @@ static void otg_timer(unsigned long _musb) spin_lock_irqsave(&musb->lock, flags); switch (musb->xceiv->otg->state) { + case OTG_STATE_A_WAIT_VRISE: + mod_timer(&glue->timer, jiffies + + msecs_to_jiffies(wrp->poll_timeout)); + break; case OTG_STATE_A_WAIT_BCON: musb_writeb(musb->mregs, MUSB_DEVCTL, 0); skip_session = 1; @@ -275,6 +246,9 @@ static void otg_timer(unsigned long _musb) break; } spin_unlock_irqrestore(&musb->lock, flags); + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); } static irqreturn_t dsps_interrupt(int irq, void *hci) @@ -338,7 +312,8 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) MUSB_HST_MODE(musb); musb->xceiv->otg->default_a = 1; musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; - del_timer(&glue->timer); + mod_timer(&glue->timer, jiffies + + msecs_to_jiffies(wrp->poll_timeout)); } else { musb->is_active = 0; MUSB_DEV_MODE(musb); @@ -358,11 +333,17 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) if (musb->int_tx || musb->int_rx || musb->int_usb) ret |= musb_interrupt(musb); - /* Poll for ID change in OTG port mode */ - if (musb->xceiv->otg->state == OTG_STATE_B_IDLE && - musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) + /* Poll for ID change and connect */ + switch (musb->xceiv->otg->state) { + case OTG_STATE_B_IDLE: + case OTG_STATE_A_WAIT_BCON: mod_timer(&glue->timer, jiffies + msecs_to_jiffies(wrp->poll_timeout)); + break; + default: + break; + } + out: spin_unlock_irqrestore(&musb->lock, flags); @@ -461,6 +442,9 @@ static int dsps_musb_init(struct musb *musb) musb_writeb(musb->mregs, MUSB_BABBLE_CTL, val); } + mod_timer(&glue->timer, jiffies + + msecs_to_jiffies(glue->wrp->poll_timeout)); + return dsps_musb_dbg_init(musb, glue); } @@ -620,7 +604,6 @@ static struct musb_platform_ops dsps_ops = { .enable = dsps_musb_enable, .disable = dsps_musb_disable, - .try_idle = dsps_musb_try_idle, .set_mode = dsps_musb_set_mode, .recover = dsps_musb_recover, }; @@ -784,6 +767,8 @@ static int dsps_probe(struct platform_device *pdev) platform_set_drvdata(pdev, glue); pm_runtime_enable(&pdev->dev); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, 200); ret = pm_runtime_get_sync(&pdev->dev); if (ret < 0) { @@ -795,11 +780,15 @@ static int dsps_probe(struct platform_device *pdev) if (ret) goto err3; + pm_runtime_mark_last_busy(&pdev->dev); + pm_runtime_put_autosuspend(&pdev->dev); + return 0; err3: - pm_runtime_put(&pdev->dev); + pm_runtime_put_sync(&pdev->dev); err2: + pm_runtime_dont_use_autosuspend(&pdev->dev); pm_runtime_disable(&pdev->dev); return ret; } @@ -811,7 +800,8 @@ static int dsps_remove(struct platform_device *pdev) platform_device_unregister(glue->musb); /* disable usbss clocks */ - pm_runtime_put(&pdev->dev); + pm_runtime_dont_use_autosuspend(&pdev->dev); + pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return 0; diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index 192248f974ec..fe08e776fec3 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -290,6 +290,7 @@ int musb_hub_control( u32 temp; int retval = 0; unsigned long flags; + bool start_musb = false; spin_lock_irqsave(&musb->lock, flags); @@ -390,7 +391,7 @@ int musb_hub_control( * logic relating to VBUS power-up. */ if (!hcd->self.is_b_host && musb_has_gadget(musb)) - musb_start(musb); + start_musb = true; break; case USB_PORT_FEAT_RESET: musb_port_reset(musb, true); @@ -451,5 +452,9 @@ error: retval = -EPIPE; } spin_unlock_irqrestore(&musb->lock, flags); + + if (start_musb) + musb_start(musb); + return retval; } diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 0b4cec940386..1ab6973d4f61 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -49,9 +49,6 @@ struct omap2430_glue { enum musb_vbus_id_status status; struct work_struct omap_musb_mailbox_work; struct device *control_otghs; - bool cable_connected; - bool enabled; - bool powered; }; #define glue_to_musb(g) platform_get_drvdata(g->musb) @@ -141,45 +138,6 @@ static inline void omap2430_low_level_init(struct musb *musb) musb_writel(musb->mregs, OTG_FORCESTDBY, l); } -/* - * We can get multiple cable events so we need to keep track - * of the power state. Only keep power enabled if USB cable is - * connected and a gadget is started. - */ -static void omap2430_set_power(struct musb *musb, bool enabled, bool cable) -{ - struct device *dev = musb->controller; - struct omap2430_glue *glue = dev_get_drvdata(dev->parent); - bool power_up; - int res; - - if (glue->enabled != enabled) - glue->enabled = enabled; - - if (glue->cable_connected != cable) - glue->cable_connected = cable; - - power_up = glue->enabled && glue->cable_connected; - if (power_up == glue->powered) { - dev_warn(musb->controller, "power state already %i\n", - power_up); - return; - } - - glue->powered = power_up; - - if (power_up) { - res = pm_runtime_get_sync(musb->controller); - if (res < 0) { - dev_err(musb->controller, "could not enable: %i", res); - glue->powered = false; - } - } else { - pm_runtime_mark_last_busy(musb->controller); - pm_runtime_put_autosuspend(musb->controller); - } -} - static int omap2430_musb_mailbox(enum musb_vbus_id_status status) { struct omap2430_glue *glue = _glue; @@ -203,21 +161,15 @@ static int omap2430_musb_mailbox(enum musb_vbus_id_status status) static void omap_musb_set_mailbox(struct omap2430_glue *glue) { struct musb *musb = glue_to_musb(glue); - struct device *dev = musb->controller; - struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev); + struct musb_hdrc_platform_data *pdata = + dev_get_platdata(musb->controller); struct omap_musb_board_data *data = pdata->board_data; struct usb_otg *otg = musb->xceiv->otg; - bool cable_connected; - - cable_connected = ((glue->status == MUSB_ID_GROUND) || - (glue->status == MUSB_VBUS_VALID)); - - if (cable_connected) - omap2430_set_power(musb, glue->enabled, cable_connected); + pm_runtime_get_sync(musb->controller); switch (glue->status) { case MUSB_ID_GROUND: - dev_dbg(dev, "ID GND\n"); + dev_dbg(musb->controller, "ID GND\n"); otg->default_a = true; musb->xceiv->otg->state = OTG_STATE_A_IDLE; @@ -230,7 +182,7 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) break; case MUSB_VBUS_VALID: - dev_dbg(dev, "VBUS Connect\n"); + dev_dbg(musb->controller, "VBUS Connect\n"); otg->default_a = false; musb->xceiv->otg->state = OTG_STATE_B_IDLE; @@ -240,7 +192,7 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) case MUSB_ID_FLOAT: case MUSB_VBUS_OFF: - dev_dbg(dev, "VBUS Disconnect\n"); + dev_dbg(musb->controller, "VBUS Disconnect\n"); musb->xceiv->last_event = USB_EVENT_NONE; if (musb->gadget_driver) @@ -253,12 +205,10 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) USB_MODE_DISCONNECT); break; default: - dev_dbg(dev, "ID float\n"); + dev_dbg(musb->controller, "ID float\n"); } - - if (!cable_connected) - omap2430_set_power(musb, glue->enabled, cable_connected); - + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); atomic_notifier_call_chain(&musb->xceiv->notifier, musb->xceiv->last_event, NULL); } @@ -376,8 +326,6 @@ static void omap2430_musb_enable(struct musb *musb) if (!WARN_ON(!musb->phy)) phy_power_on(musb->phy); - omap2430_set_power(musb, true, glue->cable_connected); - switch (glue->status) { case MUSB_ID_GROUND: @@ -419,8 +367,6 @@ static void omap2430_musb_disable(struct musb *musb) if (glue->status != MUSB_UNKNOWN) omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DISCONNECT); - - omap2430_set_power(musb, false, glue->cable_connected); } static int omap2430_musb_exit(struct musb *musb) @@ -571,7 +517,7 @@ static int omap2430_probe(struct platform_device *pdev) pm_runtime_enable(glue->dev); pm_runtime_use_autosuspend(glue->dev); - pm_runtime_set_autosuspend_delay(glue->dev, 500); + pm_runtime_set_autosuspend_delay(glue->dev, 100); ret = platform_device_add(musb); if (ret) { @@ -591,11 +537,9 @@ err0: static int omap2430_remove(struct platform_device *pdev) { struct omap2430_glue *glue = platform_get_drvdata(pdev); - struct musb *musb = glue_to_musb(glue); pm_runtime_get_sync(glue->dev); platform_device_unregister(glue->musb); - omap2430_set_power(musb, false, false); pm_runtime_put_sync(glue->dev); pm_runtime_dont_use_autosuspend(glue->dev); pm_runtime_disable(glue->dev); diff --git a/drivers/usb/musb/sunxi.c b/drivers/usb/musb/sunxi.c index c6ee16660572..1408245be18e 100644 --- a/drivers/usb/musb/sunxi.c +++ b/drivers/usb/musb/sunxi.c @@ -74,6 +74,7 @@ #define SUNXI_MUSB_FL_HAS_SRAM 5 #define SUNXI_MUSB_FL_HAS_RESET 6 #define SUNXI_MUSB_FL_NO_CONFIGDATA 7 +#define SUNXI_MUSB_FL_PHY_MODE_PEND 8 /* Our read/write methods need access and do not get passed in a musb ref :| */ static struct musb *sunxi_musb; @@ -87,6 +88,7 @@ struct sunxi_glue { struct phy *phy; struct platform_device *usb_phy; struct usb_phy *xceiv; + enum phy_mode phy_mode; unsigned long flags; struct work_struct work; struct extcon_dev *extcon; @@ -140,6 +142,9 @@ static void sunxi_musb_work(struct work_struct *work) clear_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags); } } + + if (test_and_clear_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags)) + phy_set_mode(glue->phy, glue->phy_mode); } static void sunxi_musb_set_vbus(struct musb *musb, int is_on) @@ -341,6 +346,50 @@ static void sunxi_musb_dma_controller_destroy(struct dma_controller *c) { } +static int sunxi_musb_set_mode(struct musb *musb, u8 mode) +{ + struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent); + enum phy_mode new_mode; + + switch (mode) { + case MUSB_HOST: + new_mode = PHY_MODE_USB_HOST; + break; + case MUSB_PERIPHERAL: + new_mode = PHY_MODE_USB_DEVICE; + break; + case MUSB_OTG: + new_mode = PHY_MODE_USB_OTG; + break; + default: + dev_err(musb->controller->parent, + "Error requested mode not supported by this kernel\n"); + return -EINVAL; + } + + if (glue->phy_mode == new_mode) + return 0; + + if (musb->port_mode != MUSB_PORT_MODE_DUAL_ROLE) { + dev_err(musb->controller->parent, + "Error changing modes is only supported in dual role mode\n"); + return -EINVAL; + } + + if (musb->port1_status & USB_PORT_STAT_ENABLE) + musb_root_disconnect(musb); + + /* + * phy_set_mode may sleep, and we're called with a spinlock held, + * so let sunxi_musb_work deal with it. + */ + glue->phy_mode = new_mode; + set_bit(SUNXI_MUSB_FL_PHY_MODE_PEND, &glue->flags); + schedule_work(&glue->work); + + return 0; +} + /* * sunxi musb register layout * 0x00 - 0x17 fifo regs, 1 long per fifo @@ -568,6 +617,7 @@ static const struct musb_platform_ops sunxi_musb_ops = { .writew = sunxi_musb_writew, .dma_init = sunxi_musb_dma_controller_create, .dma_exit = sunxi_musb_dma_controller_destroy, + .set_mode = sunxi_musb_set_mode, .set_vbus = sunxi_musb_set_vbus, .pre_root_reset_end = sunxi_musb_pre_root_reset_end, .post_root_reset_end = sunxi_musb_post_root_reset_end, @@ -614,21 +664,28 @@ static int sunxi_musb_probe(struct platform_device *pdev) return -EINVAL; } + glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); + if (!glue) + return -ENOMEM; + memset(&pdata, 0, sizeof(pdata)); switch (usb_get_dr_mode(&pdev->dev)) { #if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_HOST case USB_DR_MODE_HOST: pdata.mode = MUSB_PORT_MODE_HOST; + glue->phy_mode = PHY_MODE_USB_HOST; break; #endif #if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_GADGET case USB_DR_MODE_PERIPHERAL: pdata.mode = MUSB_PORT_MODE_GADGET; + glue->phy_mode = PHY_MODE_USB_DEVICE; break; #endif #ifdef CONFIG_USB_MUSB_DUAL_ROLE case USB_DR_MODE_OTG: pdata.mode = MUSB_PORT_MODE_DUAL_ROLE; + glue->phy_mode = PHY_MODE_USB_OTG; break; #endif default: @@ -638,10 +695,6 @@ static int sunxi_musb_probe(struct platform_device *pdev) pdata.platform_ops = &sunxi_musb_ops; pdata.config = &sunxi_musb_hdrc_config; - glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); - if (!glue) - return -ENOMEM; - glue->dev = &pdev->dev; INIT_WORK(&glue->work, sunxi_musb_work); glue->host_nb.notifier_call = sunxi_musb_host_notifier; diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index 0c912d3950a5..a03caf4b1327 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -1248,7 +1248,7 @@ static void ab8500_usb_set_ab8500_tuning_values(struct ab8500_usb *ab) err = abx500_set_register_interruptible(ab->dev, AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x78); if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", + dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n", err); /* Switch to normal mode/disable Bank 0x12 access */ @@ -1290,7 +1290,7 @@ static void ab8500_usb_set_ab8505_tuning_values(struct ab8500_usb *ab) 0xFC, 0x80); if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", + dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n", err); /* Switch to normal mode/disable Bank 0x12 access */ @@ -1321,7 +1321,7 @@ static void ab8500_usb_set_ab8540_tuning_values(struct ab8500_usb *ab) err = abx500_set_register_interruptible(ab->dev, AB8540_DEBUG, AB8500_USB_PHY_TUNE3, 0x90); if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 regester ret=%d\n", + dev_err(ab->dev, "Failed to set PHY_TUNE3 register ret=%d\n", err); } @@ -1351,7 +1351,7 @@ static void ab8500_usb_set_ab9540_tuning_values(struct ab8500_usb *ab) err = abx500_set_register_interruptible(ab->dev, AB8500_DEBUG, AB8500_USB_PHY_TUNE3, 0x80); if (err < 0) - dev_err(ab->dev, "Failed to set PHY_TUNE3 regester err=%d\n", + dev_err(ab->dev, "Failed to set PHY_TUNE3 register err=%d\n", err); /* Switch to normal mode/disable Bank 0x12 access */ diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index 980c9dee09eb..8311ba2968cd 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -118,8 +118,6 @@ static irqreturn_t nop_gpio_vbus_thread(int irq, void *data) status = USB_EVENT_VBUS; otg->state = OTG_STATE_B_PERIPHERAL; nop->phy.last_event = status; - if (otg->gadget) - usb_gadget_vbus_connect(otg->gadget); /* drawing a "unit load" is *always* OK, except for OTG */ nop_set_vbus_draw(nop, 100); @@ -129,8 +127,6 @@ static irqreturn_t nop_gpio_vbus_thread(int irq, void *data) } else { nop_set_vbus_draw(nop, 0); - if (otg->gadget) - usb_gadget_vbus_disconnect(otg->gadget); status = USB_EVENT_NONE; otg->state = OTG_STATE_B_IDLE; nop->phy.last_event = status; @@ -144,14 +140,18 @@ static irqreturn_t nop_gpio_vbus_thread(int irq, void *data) int usb_gen_phy_init(struct usb_phy *phy) { struct usb_phy_generic *nop = dev_get_drvdata(phy->dev); + int ret; if (!IS_ERR(nop->vcc)) { if (regulator_enable(nop->vcc)) dev_err(phy->dev, "Failed to enable power\n"); } - if (!IS_ERR(nop->clk)) - clk_prepare_enable(nop->clk); + if (!IS_ERR(nop->clk)) { + ret = clk_prepare_enable(nop->clk); + if (ret) + return ret; + } nop_reset(nop); @@ -187,7 +187,8 @@ static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) otg->gadget = gadget; if (otg->state == OTG_STATE_B_PERIPHERAL) - usb_gadget_vbus_connect(gadget); + atomic_notifier_call_chain(&otg->usb_phy->notifier, + USB_EVENT_VBUS, otg->gadget); else otg->state = OTG_STATE_B_IDLE; return 0; @@ -322,6 +323,8 @@ static int usb_phy_generic_probe(struct platform_device *pdev) gpiod_to_irq(nop->gpiod_vbus), err); return err; } + nop->phy.otg->state = gpiod_get_value(nop->gpiod_vbus) ? + OTG_STATE_B_PERIPHERAL : OTG_STATE_B_IDLE; } nop->phy.init = usb_gen_phy_init; diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index 00bfea01be65..0e2f1a36d315 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -27,6 +27,7 @@ #define DRIVER_NAME "mxs_phy" #define HW_USBPHY_PWD 0x00 +#define HW_USBPHY_TX 0x10 #define HW_USBPHY_CTRL 0x30 #define HW_USBPHY_CTRL_SET 0x34 #define HW_USBPHY_CTRL_CLR 0x38 @@ -38,6 +39,10 @@ #define HW_USBPHY_IP_SET 0x94 #define HW_USBPHY_IP_CLR 0x98 +#define GM_USBPHY_TX_TXCAL45DP(x) (((x) & 0xf) << 16) +#define GM_USBPHY_TX_TXCAL45DN(x) (((x) & 0xf) << 8) +#define GM_USBPHY_TX_D_CAL(x) (((x) & 0xf) << 0) + #define BM_USBPHY_CTRL_SFTRST BIT(31) #define BM_USBPHY_CTRL_CLKGATE BIT(30) #define BM_USBPHY_CTRL_OTG_ID_VALUE BIT(27) @@ -115,6 +120,12 @@ */ #define MXS_PHY_NEED_IP_FIX BIT(3) +/* Minimum and maximum values for device tree entries */ +#define MXS_PHY_TX_CAL45_MIN 30 +#define MXS_PHY_TX_CAL45_MAX 55 +#define MXS_PHY_TX_D_CAL_MIN 79 +#define MXS_PHY_TX_D_CAL_MAX 119 + struct mxs_phy_data { unsigned int flags; }; @@ -164,6 +175,8 @@ struct mxs_phy { const struct mxs_phy_data *data; struct regmap *regmap_anatop; int port_id; + u32 tx_reg_set; + u32 tx_reg_mask; }; static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy) @@ -185,6 +198,20 @@ static void mxs_phy_clock_switch_delay(void) usleep_range(300, 400); } +static void mxs_phy_tx_init(struct mxs_phy *mxs_phy) +{ + void __iomem *base = mxs_phy->phy.io_priv; + u32 phytx; + + /* Update TX register if there is anything to write */ + if (mxs_phy->tx_reg_mask) { + phytx = readl(base + HW_USBPHY_TX); + phytx &= ~mxs_phy->tx_reg_mask; + phytx |= mxs_phy->tx_reg_set; + writel(phytx, base + HW_USBPHY_TX); + } +} + static int mxs_phy_hw_init(struct mxs_phy *mxs_phy) { int ret; @@ -214,6 +241,8 @@ static int mxs_phy_hw_init(struct mxs_phy *mxs_phy) if (mxs_phy->data->flags & MXS_PHY_NEED_IP_FIX) writel(BM_USBPHY_IP_FIX, base + HW_USBPHY_IP_SET); + mxs_phy_tx_init(mxs_phy); + return 0; } @@ -459,6 +488,7 @@ static int mxs_phy_probe(struct platform_device *pdev) int ret; const struct of_device_id *of_id; struct device_node *np = pdev->dev.of_node; + u32 val; of_id = of_match_device(mxs_phy_dt_ids, &pdev->dev); if (!of_id) @@ -491,6 +521,37 @@ static int mxs_phy_probe(struct platform_device *pdev) } } + /* Precompute which bits of the TX register are to be updated, if any */ + if (!of_property_read_u32(np, "fsl,tx-cal-45-dn-ohms", &val) && + val >= MXS_PHY_TX_CAL45_MIN && val <= MXS_PHY_TX_CAL45_MAX) { + /* Scale to a 4-bit value */ + val = (MXS_PHY_TX_CAL45_MAX - val) * 0xF + / (MXS_PHY_TX_CAL45_MAX - MXS_PHY_TX_CAL45_MIN); + mxs_phy->tx_reg_mask |= GM_USBPHY_TX_TXCAL45DN(~0); + mxs_phy->tx_reg_set |= GM_USBPHY_TX_TXCAL45DN(val); + } + + if (!of_property_read_u32(np, "fsl,tx-cal-45-dp-ohms", &val) && + val >= MXS_PHY_TX_CAL45_MIN && val <= MXS_PHY_TX_CAL45_MAX) { + /* Scale to a 4-bit value. */ + val = (MXS_PHY_TX_CAL45_MAX - val) * 0xF + / (MXS_PHY_TX_CAL45_MAX - MXS_PHY_TX_CAL45_MIN); + mxs_phy->tx_reg_mask |= GM_USBPHY_TX_TXCAL45DP(~0); + mxs_phy->tx_reg_set |= GM_USBPHY_TX_TXCAL45DP(val); + } + + if (!of_property_read_u32(np, "fsl,tx-d-cal", &val) && + val >= MXS_PHY_TX_D_CAL_MIN && val <= MXS_PHY_TX_D_CAL_MAX) { + /* Scale to a 4-bit value. Round up the values and heavily + * weight the rounding by adding 2/3 of the denominator. + */ + val = ((MXS_PHY_TX_D_CAL_MAX - val) * 0xF + + (MXS_PHY_TX_D_CAL_MAX - MXS_PHY_TX_D_CAL_MIN) * 2/3) + / (MXS_PHY_TX_D_CAL_MAX - MXS_PHY_TX_D_CAL_MIN); + mxs_phy->tx_reg_mask |= GM_USBPHY_TX_D_CAL(~0); + mxs_phy->tx_reg_set |= GM_USBPHY_TX_D_CAL(val); + } + ret = of_alias_get_id(np, "usbphy"); if (ret < 0) dev_dbg(&pdev->dev, "failed to get alias id, errno %d\n", ret); diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index ac67bab9124c..012a37aa3e0d 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -482,6 +482,10 @@ static const struct of_device_id usbhs_of_match[] = { .data = (void *)USBHS_TYPE_RCAR_GEN3, }, { + .compatible = "renesas,usbhs-r8a7796", + .data = (void *)USBHS_TYPE_RCAR_GEN3, + }, + { .compatible = "renesas,rcar-gen2-usbhs", .data = (void *)USBHS_TYPE_RCAR_GEN2, }, diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c index d4be5d594896..28965ef4f824 100644 --- a/drivers/usb/renesas_usbhs/mod.c +++ b/drivers/usb/renesas_usbhs/mod.c @@ -282,9 +282,16 @@ static irqreturn_t usbhs_interrupt(int irq, void *data) if (usbhs_mod_is_host(priv)) usbhs_write(priv, INTSTS1, ~irq_state.intsts1 & INTSTS1_MAGIC); - usbhs_write(priv, BRDYSTS, ~irq_state.brdysts); + /* + * The driver should not clear the xxxSTS after the line of + * "call irq callback functions" because each "if" statement is + * possible to call the callback function for avoiding any side effects. + */ + if (irq_state.intsts0 & BRDY) + usbhs_write(priv, BRDYSTS, ~irq_state.brdysts); usbhs_write(priv, NRDYSTS, ~irq_state.nrdysts); - usbhs_write(priv, BEMPSTS, ~irq_state.bempsts); + if (irq_state.intsts0 & BEMP) + usbhs_write(priv, BEMPSTS, ~irq_state.bempsts); /* * call irq callback functions diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 92bc83b92d10..5bc7a6138855 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -335,7 +335,6 @@ static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv, buf = kmalloc(sizeof(*buf), GFP_ATOMIC); if (!buf) { usb_ep_free_request(&dcp->ep, req); - dev_err(dev, "recip data allocation fail\n"); return; } @@ -1062,21 +1061,18 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv) int ret; gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL); - if (!gpriv) { - dev_err(dev, "Could not allocate gadget priv\n"); + if (!gpriv) return -ENOMEM; - } uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL); if (!uep) { - dev_err(dev, "Could not allocate ep\n"); ret = -ENOMEM; goto usbhs_mod_gadget_probe_err_gpriv; } gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED); dev_info(dev, "%stransceiver found\n", - gpriv->transceiver ? "" : "no "); + !IS_ERR(gpriv->transceiver) ? "" : "no "); /* * CAUTION @@ -1106,6 +1102,8 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv) gpriv->gadget.name = "renesas_usbhs_udc"; gpriv->gadget.ops = &usbhsg_gadget_ops; gpriv->gadget.max_speed = USB_SPEED_HIGH; + gpriv->gadget.quirk_avoids_skb_reserve = usbhs_get_dparam(priv, + has_usb_dmac); INIT_LIST_HEAD(&gpriv->gadget.ep_list); diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c index 3bf0b72eb359..165e81bfd93a 100644 --- a/drivers/usb/renesas_usbhs/mod_host.c +++ b/drivers/usb/renesas_usbhs/mod_host.c @@ -166,14 +166,10 @@ static struct usbhsh_request *usbhsh_ureq_alloc(struct usbhsh_hpriv *hpriv, gfp_t mem_flags) { struct usbhsh_request *ureq; - struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); - struct device *dev = usbhs_priv_to_dev(priv); ureq = kzalloc(sizeof(struct usbhsh_request), mem_flags); - if (!ureq) { - dev_err(dev, "ureq alloc fail\n"); + if (!ureq) return NULL; - } usbhs_pkt_init(&ureq->pkt); ureq->urb = urb; @@ -388,10 +384,8 @@ static int usbhsh_endpoint_attach(struct usbhsh_hpriv *hpriv, unsigned long flags; uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags); - if (!uep) { - dev_err(dev, "usbhsh_ep alloc fail\n"); + if (!uep) return -ENOMEM; - } /******************** spin lock ********************/ usbhs_lock(priv, flags); diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c index c238772b9e9e..9396a8c14af8 100644 --- a/drivers/usb/renesas_usbhs/pipe.c +++ b/drivers/usb/renesas_usbhs/pipe.c @@ -804,10 +804,8 @@ int usbhs_pipe_probe(struct usbhs_priv *priv) } info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL); - if (!info->pipe) { - dev_err(dev, "Could not allocate pipe\n"); + if (!info->pipe) return -ENOMEM; - } info->size = pipe_size; diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 5608af4a369d..de9992b492b0 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1252,7 +1252,7 @@ static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, if (urb->transfer_buffer == NULL) { urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, - GFP_KERNEL); + GFP_ATOMIC); if (!urb->transfer_buffer) goto exit; } diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index ed378fb232e7..57426d703a09 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1340,8 +1340,8 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, } if (urb->transfer_buffer == NULL) { - urb->transfer_buffer = - kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); + urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, + GFP_ATOMIC); if (!urb->transfer_buffer) goto exit; } diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index bc472584a229..9894e341c6ac 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -525,6 +525,12 @@ static void option_instat_callback(struct urb *urb); #define VIATELECOM_VENDOR_ID 0x15eb #define VIATELECOM_PRODUCT_CDS7 0x0001 +/* WeTelecom products */ +#define WETELECOM_VENDOR_ID 0x22de +#define WETELECOM_PRODUCT_WMD200 0x6801 +#define WETELECOM_PRODUCT_6802 0x6802 +#define WETELECOM_PRODUCT_WMD300 0x6803 + struct option_blacklist_info { /* bitmask of interface numbers blacklisted for send_setup */ const unsigned long sendsetup; @@ -1991,6 +1997,9 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_INTERFACE_CLASS(0x2020, 0x4000, 0xff) }, /* OLICARD300 - MT6225 */ { USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) }, { USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) }, + { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD200, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_6802, 0xff, 0xff, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(WETELECOM_VENDOR_ID, WETELECOM_PRODUCT_WMD300, 0xff, 0xff, 0xff) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids); diff --git a/drivers/usb/storage/alauda.c b/drivers/usb/storage/alauda.c index 1d8b03c81030..878b4b8761f5 100644 --- a/drivers/usb/storage/alauda.c +++ b/drivers/usb/storage/alauda.c @@ -939,10 +939,8 @@ static int alauda_read_data(struct us_data *us, unsigned long address, len = min(sectors, blocksize) * (pagesize + 64); buffer = kmalloc(len, GFP_NOIO); - if (buffer == NULL) { - printk(KERN_WARNING "alauda_read_data: Out of memory\n"); + if (!buffer) return USB_STOR_TRANSPORT_ERROR; - } /* Figure out the initial LBA and page */ lba = address >> blockshift; @@ -1033,18 +1031,15 @@ static int alauda_write_data(struct us_data *us, unsigned long address, len = min(sectors, blocksize) * pagesize; buffer = kmalloc(len, GFP_NOIO); - if (buffer == NULL) { - printk(KERN_WARNING "alauda_write_data: Out of memory\n"); + if (!buffer) return USB_STOR_TRANSPORT_ERROR; - } /* * We also need a temporary block buffer, where we read in the old data, * overwrite parts with the new data, and manipulate the redundancy data */ blockbuffer = kmalloc((pagesize + 64) * blocksize, GFP_NOIO); - if (blockbuffer == NULL) { - printk(KERN_WARNING "alauda_write_data: Out of memory\n"); + if (!blockbuffer) { kfree(buffer); return USB_STOR_TRANSPORT_ERROR; } diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 33eb923df892..8cd2926fb1fe 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -296,6 +296,14 @@ static int slave_configure(struct scsi_device *sdev) if (us->fflags & US_FL_BROKEN_FUA) sdev->broken_fua = 1; + /* Some even totally fail to indicate a cache */ + if (us->fflags & US_FL_ALWAYS_SYNC) { + /* don't read caching information */ + sdev->skip_ms_page_8 = 1; + sdev->skip_ms_page_3f = 1; + /* assume sync is needed */ + sdev->wce_default_on = 1; + } } else { /* diff --git a/drivers/usb/storage/sddr09.c b/drivers/usb/storage/sddr09.c index c5797fa2125e..3aeaa536c44f 100644 --- a/drivers/usb/storage/sddr09.c +++ b/drivers/usb/storage/sddr09.c @@ -766,10 +766,8 @@ sddr09_read_data(struct us_data *us, len = min(sectors, (unsigned int) info->blocksize) * info->pagesize; buffer = kmalloc(len, GFP_NOIO); - if (buffer == NULL) { - printk(KERN_WARNING "sddr09_read_data: Out of memory\n"); + if (!buffer) return -ENOMEM; - } // This could be made much more efficient by checking for // contiguous LBA's. Another exercise left to the student. @@ -1004,10 +1002,8 @@ sddr09_write_data(struct us_data *us, pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT); blocklen = (pagelen << info->blockshift); blockbuffer = kmalloc(blocklen, GFP_NOIO); - if (!blockbuffer) { - printk(KERN_WARNING "sddr09_write_data: Out of memory\n"); + if (!blockbuffer) return -ENOMEM; - } /* * Since we don't write the user data directly to the device, @@ -1017,8 +1013,7 @@ sddr09_write_data(struct us_data *us, len = min(sectors, (unsigned int) info->blocksize) * info->pagesize; buffer = kmalloc(len, GFP_NOIO); - if (buffer == NULL) { - printk(KERN_WARNING "sddr09_write_data: Out of memory\n"); + if (!buffer) { kfree(blockbuffer); return -ENOMEM; } @@ -1241,8 +1236,7 @@ sddr09_read_map(struct us_data *us) { alloc_blocks = min(numblocks, SDDR09_READ_MAP_BUFSZ >> CONTROL_SHIFT); alloc_len = (alloc_blocks << CONTROL_SHIFT); buffer = kmalloc(alloc_len, GFP_NOIO); - if (buffer == NULL) { - printk(KERN_WARNING "sddr09_read_map: out of memory\n"); + if (!buffer) { result = -1; goto done; } diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index aa3539238848..af3c7eecff91 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -338,6 +338,13 @@ UNUSUAL_DEV( 0x046b, 0xff40, 0x0100, 0x0100, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NO_WP_DETECT), +/* Reported by Egbert Eich <eich@suse.com> */ +UNUSUAL_DEV( 0x0480, 0xd010, 0x0100, 0x9999, + "Toshiba", + "External USB 3.0", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_ALWAYS_SYNC), + /* Patch submitted by Philipp Friedrich <philipp@void.at> */ UNUSUAL_DEV( 0x0482, 0x0100, 0x0100, 0x0100, "Kyocera", diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index ef2d8cde6ef7..2cba13a532cd 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -498,7 +498,8 @@ void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags) US_FL_NO_READ_DISC_INFO | US_FL_NO_READ_CAPACITY_16 | US_FL_INITIAL_READ10 | US_FL_WRITE_CACHE | US_FL_NO_ATA_1X | US_FL_NO_REPORT_OPCODES | - US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS); + US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS | + US_FL_ALWAYS_SYNC); p = quirks; while (*p) { @@ -581,6 +582,9 @@ void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags) case 'w': f |= US_FL_NO_WP_DETECT; break; + case 'y': + f |= US_FL_ALWAYS_SYNC; + break; /* Ignore unrecognized flag characters */ } } @@ -794,10 +798,8 @@ static int usb_stor_acquire_resources(struct us_data *us) struct task_struct *th; us->current_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!us->current_urb) { - usb_stor_dbg(us, "URB allocation failed\n"); + if (!us->current_urb) return -ENOMEM; - } /* * Just before we start our control thread, initialize @@ -1070,17 +1072,17 @@ int usb_stor_probe2(struct us_data *us) result = usb_stor_acquire_resources(us); if (result) goto BadDevice; + usb_autopm_get_interface_no_resume(us->pusb_intf); snprintf(us->scsi_name, sizeof(us->scsi_name), "usb-storage %s", dev_name(&us->pusb_intf->dev)); result = scsi_add_host(us_to_host(us), dev); if (result) { dev_warn(dev, "Unable to add the scsi host\n"); - goto BadDevice; + goto HostAddErr; } /* Submit the delayed_work for SCSI-device scanning */ - usb_autopm_get_interface_no_resume(us->pusb_intf); set_bit(US_FLIDX_SCAN_PENDING, &us->dflags); if (delay_use > 0) @@ -1090,6 +1092,8 @@ int usb_stor_probe2(struct us_data *us) return 0; /* We come here if there are any problems */ +HostAddErr: + usb_autopm_put_interface_no_suspend(us->pusb_intf); BadDevice: usb_stor_dbg(us, "storage_probe() failed\n"); release_everything(us); diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index 545d09b8081d..5133a0792eb0 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -499,10 +499,8 @@ static int skel_probe(struct usb_interface *interface, /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) { - dev_err(&interface->dev, "Out of memory\n"); + if (!dev) goto error; - } kref_init(&dev->kref); sema_init(&dev->limit_sem, WRITES_IN_FLIGHT); mutex_init(&dev->io_mutex); @@ -526,17 +524,11 @@ static int skel_probe(struct usb_interface *interface, dev->bulk_in_size = buffer_size; dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!dev->bulk_in_buffer) { - dev_err(&interface->dev, - "Could not allocate bulk_in_buffer\n"); + if (!dev->bulk_in_buffer) goto error; - } dev->bulk_in_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->bulk_in_urb) { - dev_err(&interface->dev, - "Could not allocate bulk_in_urb\n"); + if (!dev->bulk_in_urb) goto error; - } } if (!dev->bulk_out_endpointAddr && diff --git a/drivers/usb/usbip/Kconfig b/drivers/usb/usbip/Kconfig index 17646b25343f..29492c70e0e6 100644 --- a/drivers/usb/usbip/Kconfig +++ b/drivers/usb/usbip/Kconfig @@ -24,6 +24,27 @@ config USBIP_VHCI_HCD To compile this driver as a module, choose M here: the module will be called vhci-hcd. +config USBIP_VHCI_HC_PORTS + int "Number of ports per USB/IP virtual host controller" + range 1 31 + default 8 + depends on USBIP_VHCI_HCD + ---help--- + To increase number of ports available for USB/IP virtual + host controller driver, this defines number of ports per + USB/IP virtual host controller. + +config USBIP_VHCI_NR_HCS + int "Number of USB/IP virtual host controllers" + range 1 128 + default 1 + depends on USBIP_VHCI_HCD + ---help--- + To increase number of ports available for USB/IP virtual + host controller driver, this defines number of USB/IP + virtual host controllers as if adding physical host + controllers. + config USBIP_HOST tristate "Host driver" depends on USBIP_CORE && USB diff --git a/drivers/usb/usbip/stub_rx.c b/drivers/usb/usbip/stub_rx.c index 2df63e305722..191b176ffedf 100644 --- a/drivers/usb/usbip/stub_rx.c +++ b/drivers/usb/usbip/stub_rx.c @@ -461,7 +461,6 @@ static void stub_recv_cmd_submit(struct stub_device *sdev, priv->urb = usb_alloc_urb(0, GFP_KERNEL); if (!priv->urb) { - dev_err(&udev->dev, "malloc urb\n"); usbip_event_add(ud, SDEV_EVENT_ERROR_MALLOC); return; } diff --git a/drivers/usb/usbip/vhci.h b/drivers/usb/usbip/vhci.h index a863a98a91ce..88b71c4e068f 100644 --- a/drivers/usb/usbip/vhci.h +++ b/drivers/usb/usbip/vhci.h @@ -1,5 +1,6 @@ /* * Copyright (C) 2003-2008 Takahiro Hirofuchi + * Copyright (C) 2015 Nobuo Iwata * * This is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -72,13 +73,25 @@ struct vhci_unlink { }; /* Number of supported ports. Value has an upperbound of USB_MAXCHILDREN */ -#define VHCI_NPORTS 8 +#ifdef CONFIG_USBIP_VHCI_HC_PORTS +#define VHCI_HC_PORTS CONFIG_USBIP_VHCI_HC_PORTS +#else +#define VHCI_HC_PORTS 8 +#endif + +#ifdef CONFIG_USBIP_VHCI_NR_HCS +#define VHCI_NR_HCS CONFIG_USBIP_VHCI_NR_HCS +#else +#define VHCI_NR_HCS 1 +#endif + +#define MAX_STATUS_NAME 16 /* for usb_bus.hcpriv */ struct vhci_hcd { spinlock_t lock; - u32 port_status[VHCI_NPORTS]; + u32 port_status[VHCI_HC_PORTS]; unsigned resuming:1; unsigned long re_timeout; @@ -90,14 +103,19 @@ struct vhci_hcd { * wIndex shows the port number and begins from 1. * But, the index of this array begins from 0. */ - struct vhci_device vdev[VHCI_NPORTS]; + struct vhci_device vdev[VHCI_HC_PORTS]; }; -extern struct vhci_hcd *the_controller; -extern const struct attribute_group dev_attr_group; +extern int vhci_num_controllers; +extern struct platform_device **vhci_pdevs; +extern struct attribute_group vhci_attr_group; /* vhci_hcd.c */ -void rh_port_connect(int rhport, enum usb_device_speed speed); +void rh_port_connect(struct vhci_device *vdev, enum usb_device_speed speed); + +/* vhci_sysfs.c */ +int vhci_init_attr_group(void); +void vhci_finish_attr_group(void); /* vhci_rx.c */ struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum); @@ -106,9 +124,14 @@ int vhci_rx_loop(void *data); /* vhci_tx.c */ int vhci_tx_loop(void *data); -static inline struct vhci_device *port_to_vdev(__u32 port) +static inline __u32 port_to_rhport(__u32 port) +{ + return port % VHCI_HC_PORTS; +} + +static inline int port_to_pdev_nr(__u32 port) { - return &the_controller->vdev[port]; + return port / VHCI_HC_PORTS; } static inline struct vhci_hcd *hcd_to_vhci(struct usb_hcd *hcd) @@ -116,14 +139,25 @@ static inline struct vhci_hcd *hcd_to_vhci(struct usb_hcd *hcd) return (struct vhci_hcd *) (hcd->hcd_priv); } +static inline struct device *hcd_dev(struct usb_hcd *hcd) +{ + return (hcd)->self.controller; +} + +static inline const char *hcd_name(struct usb_hcd *hcd) +{ + return (hcd)->self.bus_name; +} + static inline struct usb_hcd *vhci_to_hcd(struct vhci_hcd *vhci) { return container_of((void *) vhci, struct usb_hcd, hcd_priv); } -static inline struct device *vhci_dev(struct vhci_hcd *vhci) +static inline struct vhci_hcd *vdev_to_vhci(struct vhci_device *vdev) { - return vhci_to_hcd(vhci)->self.controller; + return container_of( + (void *)(vdev - vdev->rhport), struct vhci_hcd, vdev); } #endif /* __USBIP_VHCI_H */ diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c index 2e0450bec1b1..03eccf29ace0 100644 --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -1,5 +1,6 @@ /* * Copyright (C) 2003-2008 Takahiro Hirofuchi + * Copyright (C) 2015-2016 Nobuo Iwata * * This is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -56,7 +57,9 @@ static int vhci_get_frame_number(struct usb_hcd *hcd); static const char driver_name[] = "vhci_hcd"; static const char driver_desc[] = "USB/IP Virtual Host Controller"; -struct vhci_hcd *the_controller; +int vhci_num_controllers = VHCI_NR_HCS; + +struct platform_device **vhci_pdevs; static const char * const bit_desc[] = { "CONNECTION", /*0*/ @@ -119,47 +122,59 @@ static void dump_port_status_diff(u32 prev_status, u32 new_status) pr_debug("\n"); } -void rh_port_connect(int rhport, enum usb_device_speed speed) +void rh_port_connect(struct vhci_device *vdev, enum usb_device_speed speed) { + struct vhci_hcd *vhci = vdev_to_vhci(vdev); + int rhport = vdev->rhport; + u32 status; unsigned long flags; usbip_dbg_vhci_rh("rh_port_connect %d\n", rhport); - spin_lock_irqsave(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); + + status = vhci->port_status[rhport]; - the_controller->port_status[rhport] |= USB_PORT_STAT_CONNECTION - | (1 << USB_PORT_FEAT_C_CONNECTION); + status |= USB_PORT_STAT_CONNECTION | (1 << USB_PORT_FEAT_C_CONNECTION); switch (speed) { case USB_SPEED_HIGH: - the_controller->port_status[rhport] |= USB_PORT_STAT_HIGH_SPEED; + status |= USB_PORT_STAT_HIGH_SPEED; break; case USB_SPEED_LOW: - the_controller->port_status[rhport] |= USB_PORT_STAT_LOW_SPEED; + status |= USB_PORT_STAT_LOW_SPEED; break; default: break; } - spin_unlock_irqrestore(&the_controller->lock, flags); + vhci->port_status[rhport] = status; + + spin_unlock_irqrestore(&vhci->lock, flags); - usb_hcd_poll_rh_status(vhci_to_hcd(the_controller)); + usb_hcd_poll_rh_status(vhci_to_hcd(vhci)); } -static void rh_port_disconnect(int rhport) +static void rh_port_disconnect(struct vhci_device *vdev) { + struct vhci_hcd *vhci = vdev_to_vhci(vdev); + int rhport = vdev->rhport; + u32 status; unsigned long flags; usbip_dbg_vhci_rh("rh_port_disconnect %d\n", rhport); - spin_lock_irqsave(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); + + status = vhci->port_status[rhport]; + + status &= ~USB_PORT_STAT_CONNECTION; + status |= (1 << USB_PORT_FEAT_C_CONNECTION); - the_controller->port_status[rhport] &= ~USB_PORT_STAT_CONNECTION; - the_controller->port_status[rhport] |= - (1 << USB_PORT_FEAT_C_CONNECTION); + vhci->port_status[rhport] = status; - spin_unlock_irqrestore(&the_controller->lock, flags); - usb_hcd_poll_rh_status(vhci_to_hcd(the_controller)); + spin_unlock_irqrestore(&vhci->lock, flags); + usb_hcd_poll_rh_status(vhci_to_hcd(vhci)); } #define PORT_C_MASK \ @@ -188,7 +203,7 @@ static int vhci_hub_status(struct usb_hcd *hcd, char *buf) int changed = 0; unsigned long flags; - retval = DIV_ROUND_UP(VHCI_NPORTS + 1, 8); + retval = DIV_ROUND_UP(VHCI_HC_PORTS + 1, 8); memset(buf, 0, retval); vhci = hcd_to_vhci(hcd); @@ -200,7 +215,7 @@ static int vhci_hub_status(struct usb_hcd *hcd, char *buf) } /* check pseudo status register for each port */ - for (rhport = 0; rhport < VHCI_NPORTS; rhport++) { + for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) { if ((vhci->port_status[rhport] & PORT_C_MASK)) { /* The status of a port has been changed, */ usbip_dbg_vhci_rh("port %d status changed\n", rhport); @@ -225,7 +240,7 @@ static inline void hub_descriptor(struct usb_hub_descriptor *desc) desc->bDescLength = 9; desc->wHubCharacteristics = cpu_to_le16( HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_COMMON_OCPM); - desc->bNbrPorts = VHCI_NPORTS; + desc->bNbrPorts = VHCI_HC_PORTS; desc->u.hs.DeviceRemovable[0] = 0xff; desc->u.hs.DeviceRemovable[1] = 0xff; } @@ -238,7 +253,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, int rhport; unsigned long flags; - u32 prev_port_status[VHCI_NPORTS]; + u32 prev_port_status[VHCI_HC_PORTS]; if (!HCD_HW_ACCESSIBLE(hcd)) return -ETIMEDOUT; @@ -249,7 +264,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, */ usbip_dbg_vhci_rh("typeReq %x wValue %x wIndex %x\n", typeReq, wValue, wIndex); - if (wIndex > VHCI_NPORTS) + if (wIndex > VHCI_HC_PORTS) pr_err("invalid port number %d\n", wIndex); rhport = ((__u8)(wIndex & 0x00ff)) - 1; @@ -315,7 +330,7 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, break; case GetPortStatus: usbip_dbg_vhci_rh(" GetPortStatus port %x\n", wIndex); - if (wIndex > VHCI_NPORTS || wIndex < 1) { + if (wIndex > VHCI_HC_PORTS || wIndex < 1) { pr_err("invalid port number %d\n", wIndex); retval = -EPIPE; } @@ -416,14 +431,27 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, static struct vhci_device *get_vdev(struct usb_device *udev) { - int i; + struct platform_device *pdev; + struct usb_hcd *hcd; + struct vhci_hcd *vhci; + int pdev_nr, rhport; if (!udev) return NULL; - for (i = 0; i < VHCI_NPORTS; i++) - if (the_controller->vdev[i].udev == udev) - return port_to_vdev(i); + for (pdev_nr = 0; pdev_nr < vhci_num_controllers; pdev_nr++) { + pdev = *(vhci_pdevs + pdev_nr); + if (pdev == NULL) + continue; + hcd = platform_get_drvdata(pdev); + if (hcd == NULL) + continue; + vhci = hcd_to_vhci(hcd); + for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) { + if (vhci->vdev[rhport].udev == udev) + return &vhci->vdev[rhport]; + } + } return NULL; } @@ -432,6 +460,7 @@ static void vhci_tx_urb(struct urb *urb) { struct vhci_device *vdev = get_vdev(urb->dev); struct vhci_priv *priv; + struct vhci_hcd *vhci = vdev_to_vhci(vdev); unsigned long flags; if (!vdev) { @@ -447,7 +476,7 @@ static void vhci_tx_urb(struct urb *urb) spin_lock_irqsave(&vdev->priv_lock, flags); - priv->seqnum = atomic_inc_return(&the_controller->seqnum); + priv->seqnum = atomic_inc_return(&vhci->seqnum); if (priv->seqnum == 0xffff) dev_info(&urb->dev->dev, "seqnum max\n"); @@ -465,7 +494,9 @@ static void vhci_tx_urb(struct urb *urb) static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) { + struct vhci_hcd *vhci = hcd_to_vhci(hcd); struct device *dev = &urb->dev->dev; + u8 portnum = urb->dev->portnum; int ret = 0; struct vhci_device *vdev; unsigned long flags; @@ -473,26 +504,30 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, usbip_dbg_vhci_hc("enter, usb_hcd %p urb %p mem_flags %d\n", hcd, urb, mem_flags); + if (portnum > VHCI_HC_PORTS) { + pr_err("invalid port number %d\n", portnum); + return -ENODEV; + } + vdev = &vhci->vdev[portnum-1]; + /* patch to usb_sg_init() is in 2.5.60 */ BUG_ON(!urb->transfer_buffer && urb->transfer_buffer_length); - spin_lock_irqsave(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); if (urb->status != -EINPROGRESS) { dev_err(dev, "URB already unlinked!, status %d\n", urb->status); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); return urb->status; } - vdev = port_to_vdev(urb->dev->portnum-1); - /* refuse enqueue for dead connection */ spin_lock(&vdev->ud.lock); if (vdev->ud.status == VDEV_ST_NULL || vdev->ud.status == VDEV_ST_ERROR) { dev_err(dev, "enqueue for inactive port %d\n", vdev->rhport); spin_unlock(&vdev->ud.lock); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); return -ENODEV; } spin_unlock(&vdev->ud.lock); @@ -565,17 +600,16 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, out: vhci_tx_urb(urb); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); return 0; no_need_xmit: usb_hcd_unlink_urb_from_ep(hcd, urb); no_need_unlink: - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); if (!ret) - usb_hcd_giveback_urb(vhci_to_hcd(the_controller), - urb, urb->status); + usb_hcd_giveback_urb(hcd, urb, urb->status); return ret; } @@ -627,19 +661,20 @@ no_need_unlink: */ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) { + struct vhci_hcd *vhci = hcd_to_vhci(hcd); struct vhci_priv *priv; struct vhci_device *vdev; unsigned long flags; pr_info("dequeue a urb %p\n", urb); - spin_lock_irqsave(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); priv = urb->hcpriv; if (!priv) { /* URB was never linked! or will be soon given back by * vhci_rx. */ - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); return -EIDRM; } @@ -648,7 +683,7 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) ret = usb_hcd_check_unlink_urb(hcd, urb, status); if (ret) { - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); return ret; } } @@ -676,10 +711,9 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) usb_hcd_unlink_urb_from_ep(hcd, urb); - spin_unlock_irqrestore(&the_controller->lock, flags); - usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, - urb->status); - spin_lock_irqsave(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); + usb_hcd_giveback_urb(vhci_to_hcd(vhci), urb, urb->status); + spin_lock_irqsave(&vhci->lock, flags); } else { /* tcp connection is alive */ @@ -691,12 +725,12 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) unlink = kzalloc(sizeof(struct vhci_unlink), GFP_ATOMIC); if (!unlink) { spin_unlock(&vdev->priv_lock); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); usbip_event_add(&vdev->ud, VDEV_EVENT_ERROR_MALLOC); return -ENOMEM; } - unlink->seqnum = atomic_inc_return(&the_controller->seqnum); + unlink->seqnum = atomic_inc_return(&vhci->seqnum); if (unlink->seqnum == 0xffff) pr_info("seqnum max\n"); @@ -712,7 +746,7 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) spin_unlock(&vdev->priv_lock); } - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); usbip_dbg_vhci_hc("leave\n"); return 0; @@ -720,10 +754,12 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) static void vhci_device_unlink_cleanup(struct vhci_device *vdev) { + struct vhci_hcd *vhci = vdev_to_vhci(vdev); + struct usb_hcd *hcd = vhci_to_hcd(vhci); struct vhci_unlink *unlink, *tmp; unsigned long flags; - spin_lock_irqsave(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); spin_lock(&vdev->priv_lock); list_for_each_entry_safe(unlink, tmp, &vdev->unlink_tx, list) { @@ -752,24 +788,23 @@ static void vhci_device_unlink_cleanup(struct vhci_device *vdev) urb->status = -ENODEV; - usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb); + usb_hcd_unlink_urb_from_ep(hcd, urb); list_del(&unlink->list); spin_unlock(&vdev->priv_lock); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); - usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, - urb->status); + usb_hcd_giveback_urb(hcd, urb, urb->status); - spin_lock_irqsave(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); spin_lock(&vdev->priv_lock); kfree(unlink); } spin_unlock(&vdev->priv_lock); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); } /* @@ -827,7 +862,7 @@ static void vhci_shutdown_connection(struct usbip_device *ud) * is actually given back by vhci_rx after receiving its return pdu. * */ - rh_port_disconnect(vdev->rhport); + rh_port_disconnect(vdev); pr_info("disconnect device\n"); } @@ -866,7 +901,7 @@ static void vhci_device_unusable(struct usbip_device *ud) static void vhci_device_init(struct vhci_device *vdev) { - memset(vdev, 0, sizeof(*vdev)); + memset(vdev, 0, sizeof(struct vhci_device)); vdev->ud.side = USBIP_VHCI; vdev->ud.status = VDEV_ST_NULL; @@ -887,17 +922,34 @@ static void vhci_device_init(struct vhci_device *vdev) usbip_start_eh(&vdev->ud); } +static int hcd_name_to_id(const char *name) +{ + char *c; + long val; + int ret; + + c = strchr(name, '.'); + if (c == NULL) + return 0; + + ret = kstrtol(c+1, 10, &val); + if (ret < 0) + return ret; + + return val; +} + static int vhci_start(struct usb_hcd *hcd) { struct vhci_hcd *vhci = hcd_to_vhci(hcd); - int rhport; + int id, rhport; int err = 0; usbip_dbg_vhci_hc("enter vhci_start\n"); /* initialize private data of usb_hcd */ - for (rhport = 0; rhport < VHCI_NPORTS; rhport++) { + for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) { struct vhci_device *vdev = &vhci->vdev[rhport]; vhci_device_init(vdev); @@ -910,11 +962,26 @@ static int vhci_start(struct usb_hcd *hcd) hcd->power_budget = 0; /* no limit */ hcd->uses_new_polling = 1; + id = hcd_name_to_id(hcd_name(hcd)); + if (id < 0) { + pr_err("invalid vhci name %s\n", hcd_name(hcd)); + return -EINVAL; + } + /* vhci_hcd is now ready to be controlled through sysfs */ - err = sysfs_create_group(&vhci_dev(vhci)->kobj, &dev_attr_group); - if (err) { - pr_err("create sysfs files\n"); - return err; + if (id == 0) { + err = vhci_init_attr_group(); + if (err) { + pr_err("init attr group\n"); + return err; + } + err = sysfs_create_group(&hcd_dev(hcd)->kobj, &vhci_attr_group); + if (err) { + pr_err("create sysfs files\n"); + vhci_finish_attr_group(); + return err; + } + pr_info("created sysfs %s\n", hcd_name(hcd)); } return 0; @@ -923,15 +990,19 @@ static int vhci_start(struct usb_hcd *hcd) static void vhci_stop(struct usb_hcd *hcd) { struct vhci_hcd *vhci = hcd_to_vhci(hcd); - int rhport = 0; + int id, rhport; usbip_dbg_vhci_hc("stop VHCI controller\n"); /* 1. remove the userland interface of vhci_hcd */ - sysfs_remove_group(&vhci_dev(vhci)->kobj, &dev_attr_group); + id = hcd_name_to_id(hcd_name(hcd)); + if (id == 0) { + sysfs_remove_group(&hcd_dev(hcd)->kobj, &vhci_attr_group); + vhci_finish_attr_group(); + } /* 2. shutdown all the ports of vhci_hcd */ - for (rhport = 0; rhport < VHCI_NPORTS; rhport++) { + for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) { struct vhci_device *vdev = &vhci->vdev[rhport]; usbip_event_add(&vdev->ud, VDEV_EVENT_REMOVED); @@ -1025,9 +1096,6 @@ static int vhci_hcd_probe(struct platform_device *pdev) } hcd->has_tt = 1; - /* this is private data for vhci_hcd */ - the_controller = hcd_to_vhci(hcd); - /* * Finish generic HCD structure initialization and register. * Call the driver's reset() and start() routines. @@ -1036,7 +1104,6 @@ static int vhci_hcd_probe(struct platform_device *pdev) if (ret != 0) { pr_err("usb_add_hcd failed %d\n", ret); usb_put_hcd(hcd); - the_controller = NULL; return ret; } @@ -1059,7 +1126,6 @@ static int vhci_hcd_remove(struct platform_device *pdev) */ usb_remove_hcd(hcd); usb_put_hcd(hcd); - the_controller = NULL; return 0; } @@ -1070,21 +1136,24 @@ static int vhci_hcd_remove(struct platform_device *pdev) static int vhci_hcd_suspend(struct platform_device *pdev, pm_message_t state) { struct usb_hcd *hcd; - int rhport = 0; + struct vhci_hcd *vhci; + int rhport; int connected = 0; int ret = 0; unsigned long flags; hcd = platform_get_drvdata(pdev); + if (!hcd) + return 0; + vhci = hcd_to_vhci(hcd); - spin_lock_irqsave(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); - for (rhport = 0; rhport < VHCI_NPORTS; rhport++) - if (the_controller->port_status[rhport] & - USB_PORT_STAT_CONNECTION) + for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) + if (vhci->port_status[rhport] & USB_PORT_STAT_CONNECTION) connected += 1; - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); if (connected > 0) { dev_info(&pdev->dev, @@ -1106,6 +1175,8 @@ static int vhci_hcd_resume(struct platform_device *pdev) dev_dbg(&pdev->dev, "%s\n", __func__); hcd = platform_get_drvdata(pdev); + if (!hcd) + return 0; set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); usb_hcd_poll_rh_status(hcd); @@ -1129,52 +1200,78 @@ static struct platform_driver vhci_driver = { }, }; -/* - * The VHCI 'device' is 'virtual'; not a real plug&play hardware. - * We need to add this virtual device as a platform device arbitrarily: - * 1. platform_device_register() - */ -static void the_pdev_release(struct device *dev) +static int add_platform_device(int id) { + struct platform_device *pdev; + int dev_nr; + + if (id == 0) + dev_nr = -1; + else + dev_nr = id; + + pdev = platform_device_register_simple(driver_name, dev_nr, NULL, 0); + if (IS_ERR(pdev)) + return PTR_ERR(pdev); + + *(vhci_pdevs + id) = pdev; + return 0; } -static struct platform_device the_pdev = { - /* should be the same name as driver_name */ - .name = driver_name, - .id = -1, - .dev = { - .release = the_pdev_release, - }, -}; +static void del_platform_devices(void) +{ + struct platform_device *pdev; + int i; + + for (i = 0; i < vhci_num_controllers; i++) { + pdev = *(vhci_pdevs + i); + if (pdev != NULL) + platform_device_unregister(pdev); + *(vhci_pdevs + i) = NULL; + } + sysfs_remove_link(&platform_bus.kobj, driver_name); +} static int __init vhci_hcd_init(void) { - int ret; + int i, ret; if (usb_disabled()) return -ENODEV; + if (vhci_num_controllers < 1) + vhci_num_controllers = 1; + + vhci_pdevs = kcalloc(vhci_num_controllers, sizeof(void *), GFP_KERNEL); + if (vhci_pdevs == NULL) + return -ENOMEM; + ret = platform_driver_register(&vhci_driver); if (ret) goto err_driver_register; - ret = platform_device_register(&the_pdev); - if (ret) - goto err_platform_device_register; + for (i = 0; i < vhci_num_controllers; i++) { + ret = add_platform_device(i); + if (ret) + goto err_platform_device_register; + } pr_info(DRIVER_DESC " v" USBIP_VERSION "\n"); return ret; err_platform_device_register: + del_platform_devices(); platform_driver_unregister(&vhci_driver); err_driver_register: + kfree(vhci_pdevs); return ret; } static void __exit vhci_hcd_exit(void) { - platform_device_unregister(&the_pdev); + del_platform_devices(); platform_driver_unregister(&vhci_driver); + kfree(vhci_pdevs); } module_init(vhci_hcd_init); diff --git a/drivers/usb/usbip/vhci_rx.c b/drivers/usb/usbip/vhci_rx.c index d656e0edc3d5..fc2d319e2360 100644 --- a/drivers/usb/usbip/vhci_rx.c +++ b/drivers/usb/usbip/vhci_rx.c @@ -70,6 +70,7 @@ struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum) static void vhci_recv_ret_submit(struct vhci_device *vdev, struct usbip_header *pdu) { + struct vhci_hcd *vhci = vdev_to_vhci(vdev); struct usbip_device *ud = &vdev->ud; struct urb *urb; unsigned long flags; @@ -81,7 +82,7 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev, if (!urb) { pr_err("cannot find a urb of seqnum %u\n", pdu->base.seqnum); pr_info("max seqnum %d\n", - atomic_read(&the_controller->seqnum)); + atomic_read(&vhci->seqnum)); usbip_event_add(ud, VDEV_EVENT_ERROR_TCP); return; } @@ -105,11 +106,11 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev, usbip_dbg_vhci_rx("now giveback urb %p\n", urb); - spin_lock_irqsave(&the_controller->lock, flags); - usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); + usb_hcd_unlink_urb_from_ep(vhci_to_hcd(vhci), urb); + spin_unlock_irqrestore(&vhci->lock, flags); - usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, urb->status); + usb_hcd_giveback_urb(vhci_to_hcd(vhci), urb, urb->status); usbip_dbg_vhci_rx("Leave\n"); } @@ -142,6 +143,7 @@ static struct vhci_unlink *dequeue_pending_unlink(struct vhci_device *vdev, static void vhci_recv_ret_unlink(struct vhci_device *vdev, struct usbip_header *pdu) { + struct vhci_hcd *vhci = vdev_to_vhci(vdev); struct vhci_unlink *unlink; struct urb *urb; unsigned long flags; @@ -174,12 +176,11 @@ static void vhci_recv_ret_unlink(struct vhci_device *vdev, urb->status = pdu->u.ret_unlink.status; pr_info("urb->status %d\n", urb->status); - spin_lock_irqsave(&the_controller->lock, flags); - usb_hcd_unlink_urb_from_ep(vhci_to_hcd(the_controller), urb); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); + usb_hcd_unlink_urb_from_ep(vhci_to_hcd(vhci), urb); + spin_unlock_irqrestore(&vhci->lock, flags); - usb_hcd_giveback_urb(vhci_to_hcd(the_controller), urb, - urb->status); + usb_hcd_giveback_urb(vhci_to_hcd(vhci), urb, urb->status); } kfree(unlink); diff --git a/drivers/usb/usbip/vhci_sysfs.c b/drivers/usb/usbip/vhci_sysfs.c index 5b5462eb1665..c404017c1b5a 100644 --- a/drivers/usb/usbip/vhci_sysfs.c +++ b/drivers/usb/usbip/vhci_sysfs.c @@ -1,5 +1,6 @@ /* * Copyright (C) 2003-2008 Takahiro Hirofuchi + * Copyright (C) 2015-2016 Nobuo Iwata * * This is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -20,6 +21,8 @@ #include <linux/kthread.h> #include <linux/file.h> #include <linux/net.h> +#include <linux/platform_device.h> +#include <linux/slab.h> #include "usbip_common.h" #include "vhci.h" @@ -27,106 +30,190 @@ /* TODO: refine locking ?*/ /* Sysfs entry to show port status */ -static ssize_t status_show(struct device *dev, struct device_attribute *attr, - char *out) +static ssize_t status_show_vhci(int pdev_nr, char *out) { + struct platform_device *pdev = *(vhci_pdevs + pdev_nr); + struct vhci_hcd *vhci; char *s = out; int i = 0; unsigned long flags; - BUG_ON(!the_controller || !out); + if (!pdev || !out) { + usbip_dbg_vhci_sysfs("show status error\n"); + return 0; + } + + vhci = hcd_to_vhci(platform_get_drvdata(pdev)); - spin_lock_irqsave(&the_controller->lock, flags); + spin_lock_irqsave(&vhci->lock, flags); /* * output example: - * prt sta spd dev socket local_busid - * 000 004 000 000 c5a7bb80 1-2.3 - * 001 004 000 000 d8cee980 2-3.4 + * port sta spd dev socket local_busid + * 0000 004 000 00000000 c5a7bb80 1-2.3 + * 0001 004 000 00000000 d8cee980 2-3.4 * * IP address can be retrieved from a socket pointer address by looking * up /proc/net/{tcp,tcp6}. Also, a userland program may remember a * port number and its peer IP address. */ - out += sprintf(out, - "prt sta spd bus dev socket local_busid\n"); - - for (i = 0; i < VHCI_NPORTS; i++) { - struct vhci_device *vdev = port_to_vdev(i); + for (i = 0; i < VHCI_HC_PORTS; i++) { + struct vhci_device *vdev = &vhci->vdev[i]; spin_lock(&vdev->ud.lock); - out += sprintf(out, "%03u %03u ", i, vdev->ud.status); + out += sprintf(out, "%04u %03u ", + (pdev_nr * VHCI_HC_PORTS) + i, + vdev->ud.status); if (vdev->ud.status == VDEV_ST_USED) { out += sprintf(out, "%03u %08x ", - vdev->speed, vdev->devid); - out += sprintf(out, "%16p ", vdev->ud.tcp_socket); - out += sprintf(out, "%s", dev_name(&vdev->udev->dev)); + vdev->speed, vdev->devid); + out += sprintf(out, "%16p %s", + vdev->ud.tcp_socket, + dev_name(&vdev->udev->dev)); } else { - out += sprintf(out, "000 000 000 0000000000000000 0-0"); + out += sprintf(out, "000 00000000 "); + out += sprintf(out, "0000000000000000 0-0"); } out += sprintf(out, "\n"); spin_unlock(&vdev->ud.lock); } - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); + + return out - s; +} + +static ssize_t status_show_not_ready(int pdev_nr, char *out) +{ + char *s = out; + int i = 0; + + for (i = 0; i < VHCI_HC_PORTS; i++) { + out += sprintf(out, "%04u %03u ", + (pdev_nr * VHCI_HC_PORTS) + i, + VDEV_ST_NOTASSIGNED); + out += sprintf(out, "000 00000000 0000000000000000 0-0"); + out += sprintf(out, "\n"); + } + return out - s; +} + +static int status_name_to_id(const char *name) +{ + char *c; + long val; + int ret; + + c = strchr(name, '.'); + if (c == NULL) + return 0; + ret = kstrtol(c+1, 10, &val); + if (ret < 0) + return ret; + + return val; +} + +static ssize_t status_show(struct device *dev, + struct device_attribute *attr, char *out) +{ + char *s = out; + int pdev_nr; + + out += sprintf(out, + "port sta spd dev socket local_busid\n"); + + pdev_nr = status_name_to_id(attr->attr.name); + if (pdev_nr < 0) + out += status_show_not_ready(pdev_nr, out); + else + out += status_show_vhci(pdev_nr, out); + + return out - s; +} + +static ssize_t nports_show(struct device *dev, struct device_attribute *attr, + char *out) +{ + char *s = out; + + out += sprintf(out, "%d\n", VHCI_HC_PORTS * vhci_num_controllers); return out - s; } -static DEVICE_ATTR_RO(status); +static DEVICE_ATTR_RO(nports); /* Sysfs entry to shutdown a virtual connection */ -static int vhci_port_disconnect(__u32 rhport) +static int vhci_port_disconnect(struct vhci_hcd *vhci, __u32 rhport) { - struct vhci_device *vdev; + struct vhci_device *vdev = &vhci->vdev[rhport]; unsigned long flags; usbip_dbg_vhci_sysfs("enter\n"); /* lock */ - spin_lock_irqsave(&the_controller->lock, flags); - - vdev = port_to_vdev(rhport); - + spin_lock_irqsave(&vhci->lock, flags); spin_lock(&vdev->ud.lock); + if (vdev->ud.status == VDEV_ST_NULL) { pr_err("not connected %d\n", vdev->ud.status); /* unlock */ spin_unlock(&vdev->ud.lock); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); return -EINVAL; } /* unlock */ spin_unlock(&vdev->ud.lock); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); usbip_event_add(&vdev->ud, VDEV_EVENT_DOWN); return 0; } +static int valid_port(__u32 pdev_nr, __u32 rhport) +{ + if (pdev_nr >= vhci_num_controllers) { + pr_err("pdev %u\n", pdev_nr); + return 0; + } + if (rhport >= VHCI_HC_PORTS) { + pr_err("rhport %u\n", rhport); + return 0; + } + return 1; +} + static ssize_t store_detach(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - int err; - __u32 rhport = 0; + __u32 port = 0, pdev_nr = 0, rhport = 0; + struct usb_hcd *hcd; + int ret; - if (sscanf(buf, "%u", &rhport) != 1) + if (kstrtoint(buf, 10, &port) < 0) return -EINVAL; - /* check rhport */ - if (rhport >= VHCI_NPORTS) { - dev_err(dev, "invalid port %u\n", rhport); + pdev_nr = port_to_pdev_nr(port); + rhport = port_to_rhport(port); + + if (!valid_port(pdev_nr, rhport)) return -EINVAL; + + hcd = platform_get_drvdata(*(vhci_pdevs + pdev_nr)); + if (hcd == NULL) { + dev_err(dev, "port is not ready %u\n", port); + return -EAGAIN; } - err = vhci_port_disconnect(rhport); - if (err < 0) + ret = vhci_port_disconnect(hcd_to_vhci(hcd), rhport); + if (ret < 0) return -EINVAL; usbip_dbg_vhci_sysfs("Leave\n"); @@ -135,16 +222,12 @@ static ssize_t store_detach(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR(detach, S_IWUSR, NULL, store_detach); -/* Sysfs entry to establish a virtual connection */ -static int valid_args(__u32 rhport, enum usb_device_speed speed) +static int valid_args(__u32 pdev_nr, __u32 rhport, enum usb_device_speed speed) { - /* check rhport */ - if (rhport >= VHCI_NPORTS) { - pr_err("port %u\n", rhport); - return -EINVAL; + if (!valid_port(pdev_nr, rhport)) { + return 0; } - /* check speed */ switch (speed) { case USB_SPEED_LOW: case USB_SPEED_FULL: @@ -154,12 +237,13 @@ static int valid_args(__u32 rhport, enum usb_device_speed speed) default: pr_err("Failed attach request for unsupported USB speed: %s\n", usb_speed_string(speed)); - return -EINVAL; + return 0; } - return 0; + return 1; } +/* Sysfs entry to establish a virtual connection */ /* * To start a new USB/IP attachment, a userland program needs to setup a TCP * connection and then write its socket descriptor with remote device @@ -174,10 +258,12 @@ static int valid_args(__u32 rhport, enum usb_device_speed speed) static ssize_t store_attach(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct vhci_device *vdev; struct socket *socket; int sockfd = 0; - __u32 rhport = 0, devid = 0, speed = 0; + __u32 port = 0, pdev_nr = 0, rhport = 0, devid = 0, speed = 0; + struct usb_hcd *hcd; + struct vhci_hcd *vhci; + struct vhci_device *vdev; int err; unsigned long flags; @@ -187,16 +273,28 @@ static ssize_t store_attach(struct device *dev, struct device_attribute *attr, * @devid: unique device identifier in a remote host * @speed: usb device speed in a remote host */ - if (sscanf(buf, "%u %u %u %u", &rhport, &sockfd, &devid, &speed) != 4) + if (sscanf(buf, "%u %u %u %u", &port, &sockfd, &devid, &speed) != 4) return -EINVAL; + pdev_nr = port_to_pdev_nr(port); + rhport = port_to_rhport(port); - usbip_dbg_vhci_sysfs("rhport(%u) sockfd(%u) devid(%u) speed(%u)\n", - rhport, sockfd, devid, speed); + usbip_dbg_vhci_sysfs("port(%u) pdev(%d) rhport(%u)\n", + port, pdev_nr, rhport); + usbip_dbg_vhci_sysfs("sockfd(%u) devid(%u) speed(%u)\n", + sockfd, devid, speed); /* check received parameters */ - if (valid_args(rhport, speed) < 0) + if (!valid_args(pdev_nr, rhport, speed)) return -EINVAL; + hcd = platform_get_drvdata(*(vhci_pdevs + pdev_nr)); + if (hcd == NULL) { + dev_err(dev, "port %d is not ready\n", port); + return -EAGAIN; + } + vhci = hcd_to_vhci(hcd); + vdev = &vhci->vdev[rhport]; + /* Extract socket from fd. */ socket = sockfd_lookup(sockfd, &err); if (!socket) @@ -205,14 +303,13 @@ static ssize_t store_attach(struct device *dev, struct device_attribute *attr, /* now need lock until setting vdev status as used */ /* begin a lock */ - spin_lock_irqsave(&the_controller->lock, flags); - vdev = port_to_vdev(rhport); + spin_lock_irqsave(&vhci->lock, flags); spin_lock(&vdev->ud.lock); if (vdev->ud.status != VDEV_ST_NULL) { /* end of the lock */ spin_unlock(&vdev->ud.lock); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); sockfd_put(socket); @@ -220,9 +317,10 @@ static ssize_t store_attach(struct device *dev, struct device_attribute *attr, return -EINVAL; } - dev_info(dev, - "rhport(%u) sockfd(%d) devid(%u) speed(%u) speed_str(%s)\n", - rhport, sockfd, devid, speed, usb_speed_string(speed)); + dev_info(dev, "pdev(%u) rhport(%u) sockfd(%d)\n", + pdev_nr, rhport, sockfd); + dev_info(dev, "devid(%u) speed(%u) speed_str(%s)\n", + devid, speed, usb_speed_string(speed)); vdev->devid = devid; vdev->speed = speed; @@ -230,26 +328,92 @@ static ssize_t store_attach(struct device *dev, struct device_attribute *attr, vdev->ud.status = VDEV_ST_NOTASSIGNED; spin_unlock(&vdev->ud.lock); - spin_unlock_irqrestore(&the_controller->lock, flags); + spin_unlock_irqrestore(&vhci->lock, flags); /* end the lock */ vdev->ud.tcp_rx = kthread_get_run(vhci_rx_loop, &vdev->ud, "vhci_rx"); vdev->ud.tcp_tx = kthread_get_run(vhci_tx_loop, &vdev->ud, "vhci_tx"); - rh_port_connect(rhport, speed); + rh_port_connect(vdev, speed); return count; } static DEVICE_ATTR(attach, S_IWUSR, NULL, store_attach); -static struct attribute *dev_attrs[] = { - &dev_attr_status.attr, - &dev_attr_detach.attr, - &dev_attr_attach.attr, - &dev_attr_usbip_debug.attr, - NULL, +#define MAX_STATUS_NAME 16 + +struct status_attr { + struct device_attribute attr; + char name[MAX_STATUS_NAME+1]; }; -const struct attribute_group dev_attr_group = { - .attrs = dev_attrs, +static struct status_attr *status_attrs; + +static void set_status_attr(int id) +{ + struct status_attr *status; + + status = status_attrs + id; + if (id == 0) + strcpy(status->name, "status"); + else + snprintf(status->name, MAX_STATUS_NAME+1, "status.%d", id); + status->attr.attr.name = status->name; + status->attr.attr.mode = S_IRUGO; + status->attr.show = status_show; +} + +static int init_status_attrs(void) +{ + int id; + + status_attrs = kcalloc(vhci_num_controllers, sizeof(struct status_attr), + GFP_KERNEL); + if (status_attrs == NULL) + return -ENOMEM; + + for (id = 0; id < vhci_num_controllers; id++) + set_status_attr(id); + + return 0; +} + +static void finish_status_attrs(void) +{ + kfree(status_attrs); +} + +struct attribute_group vhci_attr_group = { + .attrs = NULL, }; + +int vhci_init_attr_group(void) +{ + struct attribute **attrs; + int ret, i; + + attrs = kcalloc((vhci_num_controllers + 5), sizeof(struct attribute *), + GFP_KERNEL); + if (attrs == NULL) + return -ENOMEM; + + ret = init_status_attrs(); + if (ret) { + kfree(attrs); + return ret; + } + *attrs = &dev_attr_nports.attr; + *(attrs + 1) = &dev_attr_detach.attr; + *(attrs + 2) = &dev_attr_attach.attr; + *(attrs + 3) = &dev_attr_usbip_debug.attr; + for (i = 0; i < vhci_num_controllers; i++) + *(attrs + i + 4) = &((status_attrs + i)->attr.attr); + vhci_attr_group.attrs = attrs; + return 0; +} + +void vhci_finish_attr_group(void) +{ + finish_status_attrs(); + kfree(vhci_attr_group.attrs); +} diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c index 8994a13819ab..7091848df6c8 100644 --- a/drivers/usb/usbip/vudc_dev.c +++ b/drivers/usb/usbip/vudc_dev.c @@ -450,7 +450,7 @@ static void vudc_shutdown(struct usbip_device *ud) if (ud->tcp_socket) kernel_sock_shutdown(ud->tcp_socket, SHUT_RDWR); - if (ud->tcp_tx) { + if (ud->tcp_rx) { kthread_stop_put(ud->tcp_rx); ud->tcp_rx = NULL; } diff --git a/drivers/usb/usbip/vudc_rx.c b/drivers/usb/usbip/vudc_rx.c index 344bd9473475..e429b59f6f8a 100644 --- a/drivers/usb/usbip/vudc_rx.c +++ b/drivers/usb/usbip/vudc_rx.c @@ -142,7 +142,7 @@ static int v_recv_cmd_submit(struct vudc *udc, urb_p->urb->status = -EINPROGRESS; /* FIXME: more pipe setup to please usbip_common */ - urb_p->urb->pipe &= ~(11 << 30); + urb_p->urb->pipe &= ~(3 << 30); switch (urb_p->ep->type) { case USB_ENDPOINT_XFER_BULK: urb_p->urb->pipe |= (PIPE_BULK << 30); diff --git a/drivers/usb/wusbcore/cbaf.c b/drivers/usb/wusbcore/cbaf.c index da1b872918b5..fb70cbef0671 100644 --- a/drivers/usb/wusbcore/cbaf.c +++ b/drivers/usb/wusbcore/cbaf.c @@ -610,8 +610,7 @@ static int cbaf_probe(struct usb_interface *iface, cbaf->usb_iface = usb_get_intf(iface); result = cbaf_check(cbaf); if (result < 0) { - dev_err(dev, "This device is not WUSB-CBAF compliant" - "and is not supported yet.\n"); + dev_err(dev, "This device is not WUSB-CBAF compliant and is not supported yet.\n"); goto error_check; } diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c index 33acd1599e99..79b2b628066d 100644 --- a/drivers/usb/wusbcore/crypto.c +++ b/drivers/usb/wusbcore/crypto.c @@ -229,10 +229,8 @@ static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc, zero_padding = sizeof(struct aes_ccm_block) - zero_padding; dst_size = blen + sizeof(b0) + sizeof(b1) + zero_padding; dst_buf = kzalloc(dst_size, GFP_KERNEL); - if (dst_buf == NULL) { - printk(KERN_ERR "E: can't alloc destination buffer\n"); + if (!dst_buf) goto error_dst_buf; - } memset(iv, 0, sizeof(iv)); diff --git a/drivers/usb/wusbcore/security.c b/drivers/usb/wusbcore/security.c index b66faaf3e842..8c9421b69da0 100644 --- a/drivers/usb/wusbcore/security.c +++ b/drivers/usb/wusbcore/security.c @@ -374,10 +374,8 @@ int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev, struct wusb_keydvt_out keydvt_out; hs = kcalloc(3, sizeof(hs[0]), GFP_KERNEL); - if (hs == NULL) { - dev_err(dev, "can't allocate handshake data\n"); + if (!hs) goto error_kzalloc; - } /* We need to turn encryption before beginning the 4way * hshake (WUSB1.0[.3.2.2]) */ diff --git a/drivers/usb/wusbcore/wa-nep.c b/drivers/usb/wusbcore/wa-nep.c index 60a10d21947d..ed4622279c63 100644 --- a/drivers/usb/wusbcore/wa-nep.c +++ b/drivers/usb/wusbcore/wa-nep.c @@ -271,16 +271,11 @@ int wa_nep_create(struct wahc *wa, struct usb_interface *iface) epd = &iface->cur_altsetting->endpoint[0].desc; wa->nep_buffer_size = 1024; wa->nep_buffer = kmalloc(wa->nep_buffer_size, GFP_KERNEL); - if (wa->nep_buffer == NULL) { - dev_err(dev, - "Unable to allocate notification's read buffer\n"); + if (!wa->nep_buffer) goto error_nep_buffer; - } wa->nep_urb = usb_alloc_urb(0, GFP_KERNEL); - if (wa->nep_urb == NULL) { - dev_err(dev, "Unable to allocate notification URB\n"); + if (wa->nep_urb == NULL) goto error_urb_alloc; - } usb_fill_int_urb(wa->nep_urb, usb_dev, usb_rcvintpipe(usb_dev, epd->bEndpointAddress), wa->nep_buffer, wa->nep_buffer_size, diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index 69af4fd9e072..167fcc71f5f6 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -2865,10 +2865,8 @@ int wa_dti_start(struct wahc *wa) goto out; wa->dti_urb = usb_alloc_urb(0, GFP_KERNEL); - if (wa->dti_urb == NULL) { - dev_err(dev, "Can't allocate DTI URB\n"); + if (wa->dti_urb == NULL) goto error_dti_urb_alloc; - } usb_fill_bulk_urb( wa->dti_urb, wa->usb_dev, usb_rcvbulkpipe(wa->usb_dev, 0x80 | dti_epd->bEndpointAddress), |