diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/core/urb.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 19f5f66c273..76db76fdb4e 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -39,7 +39,6 @@ void usb_init_urb(struct urb *urb) if (urb) { memset(urb, 0, sizeof(*urb)); kref_init(&urb->kref); - spin_lock_init(&urb->lock); INIT_LIST_HEAD(&urb->anchor_list); } } @@ -541,19 +540,21 @@ int usb_unlink_urb(struct urb *urb) */ void usb_kill_urb(struct urb *urb) { + static DEFINE_MUTEX(reject_mutex); + might_sleep(); if (!(urb && urb->dev && urb->ep)) return; - spin_lock_irq(&urb->lock); + mutex_lock(&reject_mutex); ++urb->reject; - spin_unlock_irq(&urb->lock); + mutex_unlock(&reject_mutex); usb_hcd_unlink_urb(urb, -ENOENT); wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0); - spin_lock_irq(&urb->lock); + mutex_lock(&reject_mutex); --urb->reject; - spin_unlock_irq(&urb->lock); + mutex_unlock(&reject_mutex); } /** |