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staging: pi433: add comment to rx_lock mutex definition 

Checkpatch reports: CHECK: struct mutex definition without comment.
Fix this by documenting what rx_mutex struct is used for in pi433
driver.

Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
Link: https://lore.kernel.org/r/20220103232616.GA11161@mail.google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paulo Miguel Almeida 2022-01-04 12:26:16 +13:00 committed by Greg Kroah-Hartman
parent 70d8e20c24
commit 6b2ad16369
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/pi433/pi433_if.c
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@ -92,7 +92,7 @@ struct pi433_device {
u32 rx_bytes_to_drop;
u32 rx_bytes_dropped;
unsigned int rx_position;
struct mutex rx_lock;
struct mutex rx_lock; /* protects rx_* variable accesses */
wait_queue_head_t rx_wait_queue;
/* fifo wait queue */