[PATCH] staging: most: video: document lock fields

[Hussain Sitamouwala <husainsitamuwala21@gmail.com>]

Fix checkpatch.pl checks:

CHECK: spinlock_t definition without comment
CHECK: struct mutex definition without comment

Add a comment to each lock in struct most_video_dev describing what it
protects. No functional change.

Signed-off-by: Hussain Sitamouwala <husainsitamuwala21@gmail.com>
---
 drivers/staging/most/video/video.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/most/video/video.c b/drivers/staging/most/video/video.c
index 3a0445ff62f4..d60be8a741ed 100644
--- a/drivers/staging/most/video/video.c
+++ b/drivers/staging/most/video/video.c
@@ -33,14 +33,14 @@ struct most_video_dev {
 	bool mute;
 
 	struct list_head pending_mbos;
-	spinlock_t list_lock;
+	spinlock_t list_lock; /* protects pending_mbos */
 
 	struct v4l2_device v4l2_dev;
 	atomic_t access_ref;
 	struct video_device *vdev;
 	unsigned int ctrl_input;
 
-	struct mutex lock;
+	struct mutex lock; /* serialization lock used by the V4L2 core */
 
 	wait_queue_head_t wait_data;
 };
-- 
2.53.0