queued_count variable was left untouched during the queue reinitialization
in __vb2_queue_cancel, what might lead to mismatch between the real number
of queued buffers and queued_count variable.

Reported-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Marek Szyprowski <[email protected]>
CC: Pawel Osciak <[email protected]>
---
 drivers/media/video/videobuf2-core.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/media/video/videobuf2-core.c 
b/drivers/media/video/videobuf2-core.c
index 6ba1461..6be2f79 100644
--- a/drivers/media/video/videobuf2-core.c
+++ b/drivers/media/video/videobuf2-core.c
@@ -1196,6 +1196,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
         * has not already dequeued before initiating cancel.
         */
        INIT_LIST_HEAD(&q->done_list);
+       atomic_set(&q->queued_count, 0);
        wake_up_all(&q->done_wq);
 
        /*
-- 
1.7.1.569.g6f426

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