From adc292d54de9db2e6b8ecb7f81f278bbbaf713e9 Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Wed, 16 Oct 2024 15:58:06 +0200 Subject: [PATCH] usb: gadget: uvc: wake pump everytime we update the free list 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 --- drivers/usb/gadget/function/uvc_video.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c index 57a851151225d..002bf724d8025 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);