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

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BugLink: https://bugs.launchpad.net/bugs/2101915

[ Upstream commit adc292d54de9db2e6b8ecb7f81f278bbbaf713e9 ]

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.

Fixes: 6acba0345b ("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: Sasha Levin <sashal@kernel.org>
[koichiroden: adjusted context due to missing commit:
58da4e57cb29 ("usb: gadget: uvc: rework complete handler")]
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Michael Grzeschik
2025-03-11 08:51:19 +09:00
committed by Stefan Bader
parent 41e02b68c9
commit 0c9f335a22
1 changed files with 4 additions and 0 deletions
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drivers/usb/gadget/function/uvc_video.c
+4
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@@ -473,6 +473,10 @@ 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);