ALSA: snd-usb: add snd_usb_audio-wide mutex
This is needed for new card-wide list operations.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/card.c b/sound/usb/card.c
index 4a7be7b..6bc88b7 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -276,6 +276,7 @@
static int snd_usb_audio_free(struct snd_usb_audio *chip)
{
+ mutex_destroy(&chip->mutex);
kfree(chip);
return 0;
}
@@ -336,6 +337,7 @@
return -ENOMEM;
}
+ mutex_init(&chip->mutex);
mutex_init(&chip->shutdown_mutex);
chip->index = idx;
chip->dev = dev;
