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ALSA: pcm.h: add for_each_pcm_streams()

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ALSA code has SNDRV_PCM_STREAM_PLAYBACK/CAPTURE everywhere.
Having for_each_xxxx macro is useful.
This patch adds for_each_pcm_streams() for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/874kvpbotq.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2020-02-17 17:28:19 +09:00 committed by Mark Brown
parent 0f6011fd79
commit 3193abd26b
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1 changed files with 5 additions and 0 deletions
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5
include/sound/pcm.h
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@ -644,6 +644,11 @@ void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream,
#define snd_pcm_group_for_each_entry(s, substream) \
list_for_each_entry(s, &substream->group->substreams, link_list)
#define for_each_pcm_streams(stream) \
for (stream = SNDRV_PCM_STREAM_PLAYBACK; \
stream <= SNDRV_PCM_STREAM_LAST; \
stream++)
/**
* snd_pcm_running - Check whether the substream is in a running state
* @substream: substream to check