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BACKPORT: usb: gadget: uvc: wake pump everytime we update the free list

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Since the req_free list will updated if enqueuing one request was not
possible it will be added back to the free list. With every available
free request in the queue it is a valid case for the pump worker to use
it and continue the pending bufferdata into requests for the req_ready
list.

Change-Id: Ib52f29e23a938b469782f4b25221e127c01cc8a3
Fixes: 6acba0345b68 ("usb:gadget:uvc Do not use worker thread to pump isoc usb requests")
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20240403-uvc_request_length_by_interval-v7-1-e224bb1035f0@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: William Wu <william.wu@rock-chips.com>
(cherry picked from commit adc292d54de9db2e6b8ecb7f81f278bbbaf713e9)
This commit is contained in:
Michael Grzeschik
2024-10-16 15:58:06 +02:00
committed by Tao Huang
parent 8c339b276f
commit de97b80566
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/gadget/function/uvc_video.c
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@@ -513,6 +513,10 @@ uvc_video_complete(struct usb_ep *ep, struct usb_request *req)
* up later.
*/
list_add_tail(&to_queue->list, &video->req_free);
/*
* There is a new free request - wake up the pump.
*/
queue_work(video->async_wq, &video->pump);
}
} else {
uvc_video_free_request(ureq, ep);