This is needed for new card-wide list operations.
Signed-off-by: Daniel Mack zonque@gmail.com --- sound/usb/card.c | 2 ++ sound/usb/usbaudio.h | 1 + 2 files changed, 3 insertions(+), 0 deletions(-)
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_create_streams(struct snd_usb_audio *chip, int ctrlif)
static int snd_usb_audio_free(struct snd_usb_audio *chip) { + mutex_destroy(&chip->mutex); kfree(chip); return 0; } @@ -336,6 +337,7 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx, return -ENOMEM; }
+ mutex_init(&chip->mutex); mutex_init(&chip->shutdown_mutex); chip->index = idx; chip->dev = dev; diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h index 3e2b035..a16c21d 100644 --- a/sound/usb/usbaudio.h +++ b/sound/usb/usbaudio.h @@ -36,6 +36,7 @@ struct snd_usb_audio { struct snd_card *card; struct usb_interface *pm_intf; u32 usb_id; + struct mutex mutex; struct mutex shutdown_mutex; unsigned int shutdown:1; unsigned int probing:1;