From: Michael Grzeschik Date: Wed, 16 Oct 2024 13:58:06 +0000 (+0200) Subject: usb: gadget: uvc: wake pump everytime we update the free list X-Git-Tag: v6.11.11~214 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=588c74ae855823ad7415bec85a07d0c8a6eb2d71;p=thirdparty%2Fkernel%2Fstable.git usb: gadget: uvc: wake pump everytime we update the free list [ 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: 6acba0345b68 ("usb:gadget:uvc Do not use worker thread to pump isoc usb requests") Signed-off-by: Michael Grzeschik Link: https://lore.kernel.org/r/20240403-uvc_request_length_by_interval-v7-1-e224bb1035f0@pengutronix.de Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c index a9edd60fbbf77..48fd8d3c50b0c 100644 --- a/drivers/usb/gadget/function/uvc_video.c +++ b/drivers/usb/gadget/function/uvc_video.c @@ -480,6 +480,10 @@ 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); } spin_unlock_irqrestore(&video->req_lock, flags);