diff options
Diffstat (limited to 'sound/usb/usbaudio.h')
| -rw-r--r-- | sound/usb/usbaudio.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h index 09ecc7afdc4f..2c70e0961e3d 100644 --- a/sound/usb/usbaudio.h +++ b/sound/usb/usbaudio.h @@ -60,6 +60,10 @@ struct snd_usb_audio { bool autoclock; /* from the 'autoclock' module param */ struct usb_host_interface *ctrl_intf; /* the audio control interface */ + + struct mutex dev_lock; /* to protect any race with disconnect */ + int card_num; /* cache pcm card number to use upon disconnect */ + void (*disconnect_cb)(struct snd_usb_audio *chip); }; #define USB_AUDIO_IFACE_UNUSED ((void *)-1L) |