diff options
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 67 |
1 files changed, 57 insertions, 10 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 6e49ec6f3adc..cb8ef3ef5c94 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -410,19 +410,12 @@ static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) static void acm_process_read_urb(struct acm *acm, struct urb *urb) { - struct tty_struct *tty; - if (!urb->actual_length) return; - tty = tty_port_tty_get(&acm->port); - if (!tty) - return; - - tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length); - tty_flip_buffer_push(tty); - - tty_kref_put(tty); + tty_insert_flip_string(&acm->port, urb->transfer_buffer, + urb->actual_length); + tty_flip_buffer_push(&acm->port); } static void acm_read_bulk_callback(struct urb *urb) @@ -787,6 +780,10 @@ static int get_serial_info(struct acm *acm, struct serial_struct __user *info) tmp.flags = ASYNC_LOW_LATENCY; tmp.xmit_fifo_size = acm->writesize; tmp.baud_base = le32_to_cpu(acm->line.dwDTERate); + tmp.close_delay = acm->port.close_delay / 10; + tmp.closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? + ASYNC_CLOSING_WAIT_NONE : + acm->port.closing_wait / 10; if (copy_to_user(info, &tmp, sizeof(tmp))) return -EFAULT; @@ -794,6 +791,37 @@ static int get_serial_info(struct acm *acm, struct serial_struct __user *info) return 0; } +static int set_serial_info(struct acm *acm, + struct serial_struct __user *newinfo) +{ + struct serial_struct new_serial; + unsigned int closing_wait, close_delay; + int retval = 0; + + if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) + return -EFAULT; + + close_delay = new_serial.close_delay * 10; + closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ? + ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10; + + mutex_lock(&acm->port.mutex); + + if (!capable(CAP_SYS_ADMIN)) { + if ((close_delay != acm->port.close_delay) || + (closing_wait != acm->port.closing_wait)) + retval = -EPERM; + else + retval = -EOPNOTSUPP; + } else { + acm->port.close_delay = close_delay; + acm->port.closing_wait = closing_wait; + } + + mutex_unlock(&acm->port.mutex); + return retval; +} + static int acm_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { @@ -804,6 +832,9 @@ static int acm_tty_ioctl(struct tty_struct *tty, case TIOCGSERIAL: /* gets serial port data */ rv = get_serial_info(acm, (struct serial_struct __user *) arg); break; + case TIOCSSERIAL: + rv = set_serial_info(acm, (struct serial_struct __user *) arg); + break; } return rv; @@ -949,6 +980,10 @@ static int acm_probe(struct usb_interface *intf, /* normal quirks */ quirks = (unsigned long)id->driver_info; + + if (quirks == IGNORE_DEVICE) + return -ENODEV; + num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; /* handle quirks deadly to normal probing*/ @@ -1564,6 +1599,9 @@ static const struct usb_device_id acm_ids[] = { { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */ .driver_info = NO_UNION_NORMAL, }, + { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */ + .driver_info = NO_UNION_NORMAL, + }, { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ }, @@ -1650,6 +1688,15 @@ static const struct usb_device_id acm_ids[] = { .driver_info = NO_DATA_INTERFACE, }, +#if IS_ENABLED(CONFIG_INPUT_IMS_PCU) + { USB_DEVICE(0x04d8, 0x0082), /* Application mode */ + .driver_info = IGNORE_DEVICE, + }, + { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */ + .driver_info = IGNORE_DEVICE, + }, +#endif + /* control interfaces without any protocol set */ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, USB_CDC_PROTO_NONE) }, |