[PATCH v2 5/5] staging: bcm2835-audio: fix mutex definition without comment

[Adrien Thierry]

Fix issue reported by checkpatch:

CHECK: struct mutex definition without comment
FILE: drivers/staging/vc04_services/bcm2835-audio/bcm2835.h:64:

Signed-off-by: Adrien Thierry <athierry at redhat.com>
---
 drivers/staging/vc04_services/bcm2835-audio/bcm2835.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
index 51066ac8eea5..38b7451d77b2 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.h
@@ -61,7 +61,7 @@ struct bcm2835_chip {
 
 	unsigned int opened;
 	unsigned int spdif_status;
-	struct mutex audio_mutex;
+	struct mutex audio_mutex; /* Serialize chip data access */
 
 	struct bcm2835_vchi_ctx *vchi_ctx;
 };
-- 
2.35.1