diff options
| author | Oliver Neukum <oliver@neukum.org> | 2008-03-19 22:43:12 +0200 |
|---|---|---|
| committer | Adrian Bunk <bunk@kernel.org> | 2008-03-19 22:43:12 +0200 |
| commit | 03b7f70b359bcf52ac57516d18fa0f956a5eacf7 (patch) | |
| tree | 61d1008caf1e27b4977383d4916b00cd424f6d02 | |
| parent | 4743272d12d443e241e02e2361db2f4c2dcb480e (diff) | |
USB: race on disconnect in mdc800
I overlooked one. Setting the flag and killing the URBs must be under the lo
so that no URB is submitted after usb_kill_urb()
Adrian Bunk:
Backported to 2.6.16.
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
| -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); |