ALSA: x86: Use snd_pcm_stop_xrun() for connection / disconnection paths

This seems more friendly to user-space, as it's notified at least as
an error, instead of forcibly moving the PCM state to SETUP out of
sudden.

Moreover, snd_pcm_stop() needs an extra PCM spinlock I forgot, while
snd_pcm_stop_xrun() takes the spinlock by itself.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/x86/intel_hdmi_audio.c

@@ -1378,7 +1378,7 @@ static void had_process_hot_plug(struct snd_intelhad *intelhaddata)
 		dev_dbg(intelhaddata->dev,
 			"Force to stop the active stream by disconnection\n");
 		/* Set runtime->state to hw_params done */
-		snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
+		snd_pcm_stop_xrun(substream);
 		had_substream_put(intelhaddata);
 	}
 
@@ -1414,7 +1414,7 @@ static void had_process_hot_unplug(struct snd_intelhad *intelhaddata)
 
 	/* Report to above ALSA layer */
 	if (substream)
-		snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
+		snd_pcm_stop_xrun(substream);
 
  out:
 	snd_jack_report(intelhaddata->jack, 0);