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| author |   Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2017-08-03 20:20:42 +0900 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2017-08-04 16:50:55 +0200 |
| commit | 30d8340b5857550007ab6fe9744e4384dfa6e55c (patch) | |
| tree | 40a7d3ae6e0f9fecb8a74d1b8fe73e2e2af6c96c /include/sound | |
| parent | ALSA: control: use counting semaphore as write lock for TLV write/command operations (diff) | |
| download | linux-dev-30d8340b5857550007ab6fe9744e4384dfa6e55c.tar.xz linux-dev-30d8340b5857550007ab6fe9744e4384dfa6e55c.zip | |
ALSA: control: obsolete user_ctl_lock
At a previous commit, concurrent requests for TLV data are maintained
exclusively between read requests and write/command requests. TLV
callback handlers in each driver has no risk from concurrent access for
reference/change.
In current implementation, 'struct snd_card' has a mutex to control
concurrent accesses to user-defined element sets. This commit obsoletes it.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/core.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/sound/core.h b/include/sound/core.h index 55385588eefa..357f36b5ee80 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -118,8 +118,6 @@ struct snd_card { int user_ctl_count; /* count of all user controls */ struct list_head controls; /* all controls for this card */ struct list_head ctl_files; /* active control files */ - struct mutex user_ctl_lock; /* protects user controls against - concurrent access */ struct snd_info_entry *proc_root; /* root for soundcard specific files */ struct snd_info_entry *proc_id; /* the card id */ |