diff options
| author | Takashi Iwai <tiwai@suse.de> | 2024-02-27 09:53:04 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-02-28 15:01:22 +0100 |
| commit | 650224fe8d5f6dbe6cc5875d14bf80da60dd56f8 (patch) | |
| tree | 99d4c2bc6a2272b89e8fc77b92200faf37c27f01 /include/sound | |
| parent | dd0da75b9a2768710366a599c9bd70058e67e2ea (diff) | |
| download | lwn-650224fe8d5f6dbe6cc5875d14bf80da60dd56f8.tar.gz lwn-650224fe8d5f6dbe6cc5875d14bf80da60dd56f8.zip | |
ALSA: pcm: Use guard() for PCM stream locks
Define guard() usage for PCM stream locking and use it in appropriate
places.
The pair of snd_pcm_stream_lock() and snd_pcm_stream_unlock() can be
presented with guard(pcm_stream_lock) now.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20240227085306.9764-23-tiwai@suse.de
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/pcm.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index cc175c623dac..210096f124ee 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -659,6 +659,18 @@ void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream, flags = _snd_pcm_stream_lock_irqsave_nested(substream); \ } while (0) +/* definitions for guard(); use like guard(pcm_stream_lock) */ +DEFINE_LOCK_GUARD_1(pcm_stream_lock, struct snd_pcm_substream, + snd_pcm_stream_lock(_T->lock), + snd_pcm_stream_unlock(_T->lock)) +DEFINE_LOCK_GUARD_1(pcm_stream_lock_irq, struct snd_pcm_substream, + snd_pcm_stream_lock_irq(_T->lock), + snd_pcm_stream_unlock_irq(_T->lock)) +DEFINE_LOCK_GUARD_1(pcm_stream_lock_irqsave, struct snd_pcm_substream, + snd_pcm_stream_lock_irqsave(_T->lock, _T->flags), + snd_pcm_stream_unlock_irqrestore(_T->lock, _T->flags), + unsigned long flags) + /** * snd_pcm_group_for_each_entry - iterate over the linked substreams * @s: the iterator |