ALSA: hda - Implement unbind more safely
Now we have all pieces ready, and put them into places:
- add the hda_pcm refcount to azx_pcm_open() and azx_pcm_close(),
- call the most of cleanup code in hda_codec_reset() from the codec
driver remove,
- call the same code also from the hda_codec object free.
Then the codec driver can be unbound more safely now.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index ad85f9b..cae50d5 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -420,6 +420,7 @@
hinfo->ops.close(hinfo, apcm->codec, substream);
snd_hda_power_down(apcm->codec);
mutex_unlock(&chip->open_mutex);
+ snd_hda_codec_pcm_put(apcm->info);
return 0;
}
@@ -806,6 +807,7 @@
int err;
int buff_step;
+ snd_hda_codec_pcm_get(apcm->info);
mutex_lock(&chip->open_mutex);
azx_dev = azx_assign_device(chip, substream);
if (azx_dev == NULL) {
@@ -887,6 +889,7 @@
snd_hda_power_down(apcm->codec);
unlock:
mutex_unlock(&chip->open_mutex);
+ snd_hda_codec_pcm_put(apcm->info);
return err;
}