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[media] media/usbvision: remove ctrl_urb_wq 

While the wakeup path seems to be set up, this waitqueue is actually
never used as no-one enqueues themselves on the list. As such, wakeups
are meaningless without waiters, so lets just get rid of the whole
thing.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Davidlohr Bueso 2017-01-09 13:41:34 -02:00 committed by Mauro Carvalho Chehab
parent 1059b687d0
commit 3f70608872
3 changed files with 0 additions and 4 deletions
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2
drivers/media/usb/usbvision/usbvision-core.c
View File

@ -1413,8 +1413,6 @@ static void usbvision_ctrl_urb_complete(struct urb *urb)
PDEBUG(DBG_IRQ, "");
usbvision->ctrl_urb_busy = 0;
if (waitqueue_active(&usbvision->ctrl_urb_wq))
wake_up_interruptible(&usbvision->ctrl_urb_wq);
}

1
drivers/media/usb/usbvision/usbvision-video.c
View File

@ -1336,7 +1336,6 @@ static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
if (usbvision->ctrl_urb == NULL)
goto err_unreg;
init_waitqueue_head(&usbvision->ctrl_urb_wq);
return usbvision;

1
drivers/media/usb/usbvision/usbvision.h
View File

@ -366,7 +366,6 @@ struct usb_usbvision {
unsigned char ctrl_urb_buffer[8];
int ctrl_urb_busy;
struct usb_ctrlrequest ctrl_urb_setup;
wait_queue_head_t ctrl_urb_wq; /* Processes waiting */
/* configuration part */
int have_tuner;