ALSA: hda: fix unregister device twice on ASoC driver

snd_hda_codec_device_new() is used by both legacy HDA and ASoC
driver. However, we will call snd_hdac_device_unregister() in
snd_hdac_ext_bus_device_remove() for ASoC device. This patch uses
the type flag in hdac_device struct to determine is it a ASoC device
or legacy HDA device and call snd_hdac_device_unregister() in
snd_hda_codec_dev_free() only if it is a legacy HDA device.

Signed-off-by: Bard liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 701a69d..b20eb7f 100644 (file)
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -832,7 +832,13 @@ static int snd_hda_codec_dev_free(struct snd_device *device)
        struct hda_codec *codec = device->device_data;
 
        codec->in_freeing = 1;
-       snd_hdac_device_unregister(&codec->core);
+       /*
+        * snd_hda_codec_device_new() is used by legacy HDA and ASoC driver.
+        * We can't unregister ASoC device since it will be unregistered in
+        * snd_hdac_ext_bus_device_remove().
+        */
+       if (codec->core.type == HDA_DEV_LEGACY)
+               snd_hdac_device_unregister(&codec->core);
        codec_display_power(codec, false);
        put_device(hda_codec_dev(codec));
        return 0;