- down_read(&chip->shutdown_rwsem);
- if (chip->shutdown)
- err = -ENODEV;
- else
- err = usb_control_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
- (pval >> 16) & 0xff,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
- pval >> 24, pval & 0xffff, NULL, 0, 1000);
- up_read(&chip->shutdown_rwsem);
+ err = snd_usb_lock_shutdown(chip);
+ if (err < 0)
+ return err;
+ err = usb_control_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
+ (pval >> 16) & 0xff,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+ pval >> 24, pval & 0xffff, NULL, 0, 1000);
+ snd_usb_unlock_shutdown(chip);