[PATCH] media: video-i2c: fix buffer queue ordering

[PATCH] media: video-i2c: fix buffer queue ordering

[Arash Golgol]

Queued buffers are added to the tail of vid_cap_active in
buffer_queue(), but the capture kthread also retrieves buffers from
the tail of the list.

This makes the queue behave as LIFO instead of FIFO when multiple
buffers are queued.

Fix this by retrieving buffers from the head of the list.

Signed-off-by: Arash Golgol <arash.golgol@gmail.com>
---
 drivers/media/i2c/video-i2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/video-i2c.c b/drivers/media/i2c/video-i2c.c
index fef3993f4e2d..b2db0dd64a5d 100644
--- a/drivers/media/i2c/video-i2c.c
+++ b/drivers/media/i2c/video-i2c.c
@@ -454,7 +454,7 @@ static int video_i2c_thread_vid_cap(void *priv)
 		spin_lock(&data->slock);
 
 		if (!list_empty(&data->vid_cap_active)) {
-			vid_cap_buf = list_last_entry(&data->vid_cap_active,
+			vid_cap_buf = list_first_entry(&data->vid_cap_active,
 						 struct video_i2c_buffer, list);
 			list_del(&vid_cap_buf->list);
 		}
-- 
2.34.1