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/usb/endpoint.c b/sound/usb/endpoint.c
index a4679913b0aa..03b074419964 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -391,9 +391,7 @@ static void snd_complete_urb(struct urb *urb)
         usb_audio_err(ep->chip, "cannot submit urb (err = %d)\n", err);
         if (ep->data_subs && ep->data_subs->pcm_substream) {
                 substream = ep->data_subs->pcm_substream;
-                snd_pcm_stream_lock_irqsave(substream, flags);
-                snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
-                snd_pcm_stream_unlock_irqrestore(substream, flags);
+                snd_pcm_stop_xrun(substream);
         }
 
 exit_clear: