diff options
| -rw-r--r-- | drivers/usb/image/mdc800.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/image/mdc800.c b/drivers/usb/image/mdc800.c index 049871145d63..067dad0aaa65 100644 --- a/drivers/usb/image/mdc800.c +++ b/drivers/usb/image/mdc800.c @@ -564,11 +564,15 @@ static void mdc800_usb_disconnect (struct usb_interface *intf) usb_deregister_dev(intf, &mdc800_class); + /* must be under lock to make sure no URB + is submitted after usb_kill_urb() */ + down (&mdc800->io_lock); mdc800->state=NOT_CONNECTED; usb_kill_urb(mdc800->irq_urb); usb_kill_urb(mdc800->write_urb); usb_kill_urb(mdc800->download_urb); + up (&mdc800->io_lock); mdc800->dev = NULL; usb_set_intfdata(intf, NULL); |