6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
[ 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 <m.grzeschik@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240403-uvc_request_length_by_interval-v7-1-e224bb1035f0@xxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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);
--
2.43.0
