ALSA: x86: Don't bail out from PCM ops when disconnected

Currently the driver returns -ENODEV when the monitor is disconnected.
But PA alsa module doesn't like this and it starts playing Juliet,
kills itself as if it were a fatal tragedy.

Since we protect the whole read/write at disconnection, just allow the
PCM accesses even during disconnection.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c
index dd3baab..360cff3 100644 (file)
--- a/sound/x86/intel_hdmi_audio.c
+++ b/sound/x86/intel_hdmi_audio.c
@@ -1054,13 +1054,6 @@ static int had_pcm_open(struct snd_pcm_substream *substream)
 
        pm_runtime_get_sync(intelhaddata->dev);
 
-       if (!intelhaddata->connected) {
-               dev_dbg(intelhaddata->dev, "%s: HDMI cable plugged-out\n",
-                       __func__);
-               retval = -ENODEV;
-               goto error;
-       }
-
        /* set the runtime hw parameter with local snd_pcm_hardware struct */
        runtime->hw = had_pcm_hardware;
 
@@ -1186,14 +1179,6 @@ static int had_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
        case SNDRV_PCM_TRIGGER_START:
        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
        case SNDRV_PCM_TRIGGER_RESUME:
-               /* Disable local INTRs till register prgmng is done */
-               if (!intelhaddata->connected) {
-                       dev_dbg(intelhaddata->dev,
-                               "_START: HDMI cable plugged-out\n");
-                       retval = -ENODEV;
-                       break;
-               }
-
                /* Enable Audio */
                had_ack_irqs(intelhaddata); /* FIXME: do we need this? */
                had_enable_audio(intelhaddata, true);
@@ -1227,13 +1212,6 @@ static int had_pcm_prepare(struct snd_pcm_substream *substream)
        intelhaddata = snd_pcm_substream_chip(substream);
        runtime = substream->runtime;
 
-       if (!intelhaddata->connected) {
-               dev_dbg(intelhaddata->dev, "%s: HDMI cable plugged-out\n",
-                       __func__);
-               retval = -ENODEV;
-               goto prep_end;
-       }
-
        dev_dbg(intelhaddata->dev, "period_size=%d\n",
                (int)frames_to_bytes(runtime, runtime->period_size));
        dev_dbg(intelhaddata->dev, "periods=%d\n", runtime->periods);