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| author |   Takashi Iwai <tiwai@suse.de> | 2022-02-15 14:49:08 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2022-02-15 14:49:28 +0100 |
| commit | a9f73b06ff913da374d257d933a1cf9bfbc84743 (patch) | |
| tree | e9fc2f519d9662a5264ab17456fc8991f739a4bd /include/sound | |
| parent | Merge tag 'platform-drivers-x86-serial-multi-instantiate-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 into for-next (diff) | |
| parent | Merge tag 'asoc-fix-v5.17-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus (diff) | |
| download | linux-dev-a9f73b06ff913da374d257d933a1cf9bfbc84743.tar.xz linux-dev-a9f73b06ff913da374d257d933a1cf9bfbc84743.zip | |
Merge branch 'for-linus' into for-next
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/pcm.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 9b187d86e1bd..36da42cd0774 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -617,6 +617,7 @@ void snd_pcm_stream_unlock(struct snd_pcm_substream *substream); void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream); void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream); unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream); +unsigned long _snd_pcm_stream_lock_irqsave_nested(struct snd_pcm_substream *substream); /** * snd_pcm_stream_lock_irqsave - Lock the PCM stream @@ -636,6 +637,20 @@ void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream, unsigned long flags); /** + * snd_pcm_stream_lock_irqsave_nested - Single-nested PCM stream locking + * @substream: PCM substream + * @flags: irq flags + * + * This locks the PCM stream like snd_pcm_stream_lock_irqsave() but with + * the single-depth lockdep subclass. + */ +#define snd_pcm_stream_lock_irqsave_nested(substream, flags) \ + do { \ + typecheck(unsigned long, flags); \ + flags = _snd_pcm_stream_lock_irqsave_nested(substream); \ + } while (0) + +/** * snd_pcm_group_for_each_entry - iterate over the linked substreams * @s: the iterator * @substream: the substream |