staging: most: core: add comments to mutex and spinlock definitions

This patch adds a comment to the start_mutex and fifo_lock fields of
the most_channel structure definition.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Link: https://lore.kernel.org/r/1573566036-2279-1-git-send-email-christian.gromm@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/most/core.c b/drivers/staging/most/core.c
index f7d2c78..79e66eb 100644 (file)
--- a/drivers/staging/most/core.c
+++ b/drivers/staging/most/core.c
@@ -52,7 +52,7 @@ struct most_channel {
        u16 channel_id;
        char name[STRING_SIZE];
        bool is_poisoned;
-       struct mutex start_mutex;
+       struct mutex start_mutex; /* channel activation synchronization */
        struct mutex nq_mutex; /* nq thread synchronization */
        int is_starving;
        struct most_interface *iface;
@@ -60,7 +60,7 @@ struct most_channel {
        bool keep_mbo;
        bool enqueue_halt;
        struct list_head fifo;
-       spinlock_t fifo_lock;
+       spinlock_t fifo_lock; /* fifo access synchronization */
        struct list_head halt_fifo;
        struct list_head list;
        struct pipe pipe0;