From 43febb27dcdaf9a15e2f362a6d09b0f191c4dcea Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Mon, 4 Mar 2013 16:52:38 -0600 Subject: usb: gadget: composite: fix kernel-doc warnings A few trivial fixes for composite driver: Warning(include/linux/usb/composite.h:165): No description found for parameter 'fs_descriptors' Warning(include/linux/usb/composite.h:165): Excess struct/union/enum/typedef member 'descriptors' description in 'usb_function' Warning(include/linux/usb/composite.h:321): No description found for parameter 'gadget_driver' Warning(drivers/usb/gadget/composite.c:1777): Excess function parameter 'bind' description in 'usb_composite_probe' Cc: Greg Kroah-Hartman Cc: Jiri Kosina Cc: linux-usb@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux/usb') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 3c671c1b37f6..8860594d6364 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -60,7 +60,7 @@ struct usb_configuration; * @name: For diagnostics, identifies the function. * @strings: tables of strings, keyed by identifiers assigned during bind() * and by language IDs provided in control requests - * @descriptors: Table of full (or low) speed descriptors, using interface and + * @fs_descriptors: Table of full (or low) speed descriptors, using interface and * string identifiers assigned during @bind(). If this pointer is null, * the function will not be available at full speed (or at low speed). * @hs_descriptors: Table of high speed descriptors, using interface and @@ -290,6 +290,7 @@ enum { * after function notifications * @resume: Notifies configuration when the host restarts USB traffic, * before function notifications + * @gadget_driver: Gadget driver controlling this driver * * Devices default to reporting self powered operation. Devices which rely * on bus powered operation should report this in their @bind method. -- cgit v1.2.3 From 1e8bbe6cd02fc300c88bd48244ce61ad9c7d1776 Mon Sep 17 00:00:00 2001 From: Bjørn Mork Date: Thu, 14 Mar 2013 01:05:13 +0000 Subject: net: cdc_ncm, cdc_mbim: allow user to prefer NCM for backwards compatibility commit bd329e1 ("net: cdc_ncm: do not bind to NCM compatible MBIM devices") introduced a new policy, preferring MBIM for dual NCM/MBIM functions if the cdc_mbim driver was enabled. This caused a regression for users wanting to use NCM. Devices implementing NCM backwards compatibility according to section 3.2 of the MBIM v1.0 specification allow either NCM or MBIM on a single USB function, using different altsettings. The cdc_ncm and cdc_mbim drivers will both probe such functions, and must agree on a common policy for selecting either MBIM or NCM. Until now, this policy has been set at build time based on CONFIG_USB_NET_CDC_MBIM. Use a module parameter to set the system policy at runtime, allowing the user to prefer NCM on systems with the cdc_mbim driver. Cc: Greg Suarez Cc: Alexey Orishko Reported-by: Geir Haatveit Reported-by: Tommi Kyntola Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=54791 Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/cdc_mbim.c | 11 +--------- drivers/net/usb/cdc_ncm.c | 49 +++++++++++++++++++++++++++++---------------- include/linux/usb/cdc_ncm.h | 1 + 3 files changed, 34 insertions(+), 27 deletions(-) (limited to 'include/linux/usb') diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c index 248d2dc765a5..16c842997291 100644 --- a/drivers/net/usb/cdc_mbim.c +++ b/drivers/net/usb/cdc_mbim.c @@ -68,18 +68,9 @@ static int cdc_mbim_bind(struct usbnet *dev, struct usb_interface *intf) struct cdc_ncm_ctx *ctx; struct usb_driver *subdriver = ERR_PTR(-ENODEV); int ret = -ENODEV; - u8 data_altsetting = CDC_NCM_DATA_ALTSETTING_NCM; + u8 data_altsetting = cdc_ncm_select_altsetting(dev, intf); struct cdc_mbim_state *info = (void *)&dev->data; - /* see if interface supports MBIM alternate setting */ - if (intf->num_altsetting == 2) { - if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) - usb_set_interface(dev->udev, - intf->cur_altsetting->desc.bInterfaceNumber, - CDC_NCM_COMM_ALTSETTING_MBIM); - data_altsetting = CDC_NCM_DATA_ALTSETTING_MBIM; - } - /* Probably NCM, defer for cdc_ncm_bind */ if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) goto err; diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 61b74a2b89ac..4709fa3497cf 100644 --- a/drivers/net/usb/cdc_ncm.c +++ b/drivers/net/usb/cdc_ncm.c @@ -55,6 +55,14 @@ #define DRIVER_VERSION "14-Mar-2012" +#if IS_ENABLED(CONFIG_USB_NET_CDC_MBIM) +static bool prefer_mbim = true; +#else +static bool prefer_mbim; +#endif +module_param(prefer_mbim, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(prefer_mbim, "Prefer MBIM setting on dual NCM/MBIM functions"); + static void cdc_ncm_txpath_bh(unsigned long param); static void cdc_ncm_tx_timeout_start(struct cdc_ncm_ctx *ctx); static enum hrtimer_restart cdc_ncm_tx_timer_cb(struct hrtimer *hr_timer); @@ -550,9 +558,12 @@ void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf) } EXPORT_SYMBOL_GPL(cdc_ncm_unbind); -static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf) +/* Select the MBIM altsetting iff it is preferred and available, + * returning the number of the corresponding data interface altsetting + */ +u8 cdc_ncm_select_altsetting(struct usbnet *dev, struct usb_interface *intf) { - int ret; + struct usb_host_interface *alt; /* The MBIM spec defines a NCM compatible default altsetting, * which we may have matched: @@ -568,23 +579,27 @@ static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf) * endpoint descriptors, shall be constructed according to * the rules given in section 6 (USB Device Model) of this * specification." - * - * Do not bind to such interfaces, allowing cdc_mbim to handle - * them */ -#if IS_ENABLED(CONFIG_USB_NET_CDC_MBIM) - if ((intf->num_altsetting == 2) && - !usb_set_interface(dev->udev, - intf->cur_altsetting->desc.bInterfaceNumber, - CDC_NCM_COMM_ALTSETTING_MBIM)) { - if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) - return -ENODEV; - else - usb_set_interface(dev->udev, - intf->cur_altsetting->desc.bInterfaceNumber, - CDC_NCM_COMM_ALTSETTING_NCM); + if (prefer_mbim && intf->num_altsetting == 2) { + alt = usb_altnum_to_altsetting(intf, CDC_NCM_COMM_ALTSETTING_MBIM); + if (alt && cdc_ncm_comm_intf_is_mbim(alt) && + !usb_set_interface(dev->udev, + intf->cur_altsetting->desc.bInterfaceNumber, + CDC_NCM_COMM_ALTSETTING_MBIM)) + return CDC_NCM_DATA_ALTSETTING_MBIM; } -#endif + return CDC_NCM_DATA_ALTSETTING_NCM; +} +EXPORT_SYMBOL_GPL(cdc_ncm_select_altsetting); + +static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf) +{ + int ret; + + /* MBIM backwards compatible function? */ + cdc_ncm_select_altsetting(dev, intf); + if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) + return -ENODEV; /* NCM data altsetting is always 1 */ ret = cdc_ncm_bind_common(dev, intf, 1); diff --git a/include/linux/usb/cdc_ncm.h b/include/linux/usb/cdc_ncm.h index 3b8f9d4fc3fe..cc25b70af33c 100644 --- a/include/linux/usb/cdc_ncm.h +++ b/include/linux/usb/cdc_ncm.h @@ -127,6 +127,7 @@ struct cdc_ncm_ctx { u16 connected; }; +extern u8 cdc_ncm_select_altsetting(struct usbnet *dev, struct usb_interface *intf); extern int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting); extern void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf); extern struct sk_buff *cdc_ncm_fill_tx_frame(struct cdc_ncm_ctx *ctx, struct sk_buff *skb, __le32 sign); -- cgit v1.2.3 From 7fa4cd1a78ea5af688ffce45553abbee9d7afd84 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 20 Mar 2013 10:35:44 -0300 Subject: usb: ulpi: Define a *otg_ulpi_create no-op Building a kernel for imx_v4_v5_defconfig with CONFIG_USB_ULPI disabled, results in the following error: arch/arm/mach-imx/built-in.o: In function 'pca100_init': platform-mx2-emma.c:(.init.text+0x6788): undefined reference to 'otg_ulpi_create' platform-mx2-emma.c:(.init.text+0x682c): undefined reference to 'mxc_ulpi_access_ops' Fix this by providing a no-op definition of *otg_ulpi_create for the case when CONFIG_USB_ULPI is not defined. Acked-by: Igor Grinberg Signed-off-by: Fabio Estevam Signed-off-by: Felipe Balbi --- include/linux/usb/ulpi.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux/usb') diff --git a/include/linux/usb/ulpi.h b/include/linux/usb/ulpi.h index 6f033a415ecb..5c295c26ad37 100644 --- a/include/linux/usb/ulpi.h +++ b/include/linux/usb/ulpi.h @@ -181,8 +181,16 @@ /*-------------------------------------------------------------------------*/ +#if IS_ENABLED(CONFIG_USB_ULPI) struct usb_phy *otg_ulpi_create(struct usb_phy_io_ops *ops, unsigned int flags); +#else +static inline struct usb_phy *otg_ulpi_create(struct usb_phy_io_ops *ops, + unsigned int flags) +{ + return NULL; +} +#endif #ifdef CONFIG_USB_ULPI_VIEWPORT /* access ops for controllers with a viewport register */ -- cgit v1.2.3 From e5b33dc9d16053c2ae4c2c669cf008829530364b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:10 +0100 Subject: USB: serial: add modem-status-change wait queue Add modem-status-change wait queue to struct usb_serial_port that subdrivers can use to implement TIOCMIWAIT. Currently subdrivers use a private wait queue which may have been released when waking up after device disconnected. Note that we're adding a new wait queue rather than reusing the tty-port one as we do not want to get woken up at hangup (yet). Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/serial.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/usb') diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index ef9be7e1e190..1819b59aab2a 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -66,6 +66,7 @@ * port. * @flags: usb serial port flags * @write_wait: a wait_queue_head_t used by the port. + * @delta_msr_wait: modem-status-change wait queue * @work: work queue entry for the line discipline waking up. * @throttled: nonzero if the read urb is inactive to throttle the device * @throttle_req: nonzero if the tty wants to throttle us @@ -112,6 +113,7 @@ struct usb_serial_port { unsigned long flags; wait_queue_head_t write_wait; + wait_queue_head_t delta_msr_wait; struct work_struct work; char throttled; char throttle_req; -- cgit v1.2.3