From: Davidlohr Bueso <dave@stgolabs.net>
To: mchehab@kernel.org
Cc: dave@stgolabs.net, linux-media@vger.kernel.org,
linux-kernel@vger.kernel.org, Davidlohr Bueso <dbueso@suse.de>
Subject: [PATCH] media/usbvision: remove ctrl_urb_wq
Date: Mon, 9 Jan 2017 07:41:34 -0800 [thread overview]
Message-ID: <1483976494-25713-1-git-send-email-dave@stgolabs.net> (raw)
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>
---
drivers/media/usb/usbvision/usbvision-core.c | 2 --
drivers/media/usb/usbvision/usbvision-video.c | 1 -
drivers/media/usb/usbvision/usbvision.h | 1 -
3 files changed, 4 deletions(-)
diff --git a/drivers/media/usb/usbvision/usbvision-core.c b/drivers/media/usb/usbvision/usbvision-core.c
index bf041a9e69db..c938aa477edf 100644
--- a/drivers/media/usb/usbvision/usbvision-core.c
+++ b/drivers/media/usb/usbvision/usbvision-core.c
@@ -1417,8 +1417,6 @@ 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);
}
diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
index a7529196c327..97685d0ad7c9 100644
--- a/drivers/media/usb/usbvision/usbvision-video.c
+++ b/drivers/media/usb/usbvision/usbvision-video.c
@@ -1340,7 +1340,6 @@ 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;
diff --git a/drivers/media/usb/usbvision/usbvision.h b/drivers/media/usb/usbvision/usbvision.h
index 4f2e4fde38f2..a5268c4f6a17 100644
--- a/drivers/media/usb/usbvision/usbvision.h
+++ b/drivers/media/usb/usbvision/usbvision.h
@@ -370,7 +370,6 @@ 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;
--
2.6.6
reply other threads:[~2017-01-09 15:41 UTC|newest]
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