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ALSA: pcm: Add snd_pcm_stop_xrun() helper

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Add a new helper function snd_pcm_stop_xrun() to the standard sequnce
lock/snd_pcm_stop(XRUN)/unlock by a single call, and replace the
existing open codes with this helper.

The function checks the PCM running state to prevent setting the wrong
state, too, for more safety.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2014-11-07 17:08:28 +01:00
parent 31584ed18c
commit 1fb8510cdb
15 changed files with 46 additions and 78 deletions
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4
sound/arm/pxa2xx-pcm-lib.c
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@@ -200,9 +200,7 @@ void pxa2xx_pcm_dma_irq(int dma_ch, void *dev_id)
} else {
printk(KERN_ERR "DMA error on channel %d (DCSR=%#x)\n",
dma_ch, dcsr);
snd_pcm_stream_lock(substream);
snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
snd_pcm_stream_unlock(substream);
snd_pcm_stop_xrun(substream);
}
}
EXPORT_SYMBOL(pxa2xx_pcm_dma_irq);