From 37bb927d5bb45b5dafaf9769bbed974e28621654 Mon Sep 17 00:00:00 2001 From: Oswald Buddenhagen Date: Fri, 28 Apr 2023 11:59:40 +0200 Subject: [PATCH] ALSA: core: update comment on snd_card.controls_rwsem Since commit 5bbb1ab5bd ("control: use counting semaphore as write lock for ELEM_WRITE operation"), this has been locking the controls including their values, not just the list of controls. Signed-off-by: Oswald Buddenhagen Link: https://lore.kernel.org/r/20230428095941.1706278-6-oswald.buddenhagen@gmx.de Signed-off-by: Takashi Iwai --- include/sound/core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/sound/core.h b/include/sound/core.h index 3edc4ab..4ea5f66 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -98,7 +98,7 @@ struct snd_card { struct device ctl_dev; /* control device */ unsigned int last_numid; /* last used numeric ID */ - struct rw_semaphore controls_rwsem; /* controls list lock */ + struct rw_semaphore controls_rwsem; /* controls lock (list and values) */ rwlock_t ctl_files_rwlock; /* ctl_files list lock */ int controls_count; /* count of all controls */ size_t user_ctl_alloc_size; // current memory allocation by user controls. -- 2.7.4