ALSA: pcm: Add snd_pcm_stop_xrun() helper

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>

1 files changed, 1 insertions, 3 deletions

diff --git a/sound/soc/atmel/atmel-pcm-dma.c b/sound/soc/atmel/atmel-pcm-dma.c
index b79a2a864513..33fb3bb133df 100644
--- a/sound/soc/atmel/atmel-pcm-dma.c
+++ b/sound/soc/atmel/atmel-pcm-dma.c
@@ -80,9 +80,7 @@ static void atmel_pcm_dma_irq(u32 ssc_sr,
 
                 /* stop RX and capture: will be enabled again at restart */
                 ssc_writex(prtd->ssc->regs, SSC_CR, prtd->mask->ssc_disable);
-                snd_pcm_stream_lock(substream);
-                snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
-                snd_pcm_stream_unlock(substream);
+                snd_pcm_stop_xrun(substream);
 
                 /* now drain RHR and read status to remove xrun condition */
                 ssc_readx(prtd->ssc->regs, SSC_RHR);