diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2022-09-07 23:58:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-09 09:30:18 +0200 |
| commit | 9b91a65230784a9ef644b8bdbb82a79ba4ae9456 (patch) | |
| tree | 3eea9295f4086b0435701f94a8f72d9b36eb4160 /drivers/usb/gadget/function/f_uvc.c | |
| parent | d818320ea200b02f2fea693b2be204f1990bb7e9 (diff) | |
usb: gadget: uvc: increase worker prio to WQ_HIGHPRI
This patch is changing the simple workqueue in the gadget driver to be
allocated as async_wq with a higher priority. The pump worker, that is
filling the usb requests, will have a higher priority and will not be
scheduled away so often while the video stream is handled. This will
lead to fewer streaming underruns.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20220907215818.2670097-1-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/gadget/function/f_uvc.c')
| -rw-r--r-- | drivers/usb/gadget/function/f_uvc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c index f4f6cf75930b..09961f4ca981 100644 --- a/drivers/usb/gadget/function/f_uvc.c +++ b/drivers/usb/gadget/function/f_uvc.c @@ -897,10 +897,14 @@ static void uvc_function_unbind(struct usb_configuration *c, { struct usb_composite_dev *cdev = c->cdev; struct uvc_device *uvc = to_uvc(f); + struct uvc_video *video = &uvc->video; long wait_ret = 1; uvcg_info(f, "%s()\n", __func__); + if (video->async_wq) + destroy_workqueue(video->async_wq); + /* * If we know we're connected via v4l2, then there should be a cleanup * of the device from userspace either via UVC_EVENT_DISCONNECT or |