From: ddl <ddl@rock-chips.com>
Date: Tue, 28 Feb 2012 06:55:57 +0000 (+0800)
Subject: camera: fix uvc driver couldn't wake up when dequeue buffer is empty, if stream off... 
X-Git-Tag: firefly_0821_release~9613
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2386542aeb43c6cea4b83c1af0838bfd91c144c2;p=firefly-linux-kernel-4.4.55.git

camera: fix uvc driver couldn't wake up when dequeue buffer is empty, if stream off device
---

diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c
index ace5f99bbc4d..212809254527 100644
--- a/drivers/media/video/uvc/uvc_queue.c
+++ b/drivers/media/video/uvc/uvc_queue.c
@@ -371,7 +371,7 @@ checks:
 				((!list_empty(&queue->mainqueue)) || (!(queue->flags & UVC_QUEUE_STREAMING))));
 			mutex_lock(&queue->mutex);
 
-			if (ret)
+			if (ret || (!(queue->flags & UVC_QUEUE_STREAMING)))
 				goto done;
 
 			goto checks;