Commit 5ec9c177 authored by Hans de Goede's avatar Hans de Goede Committed by Sarah Sharp
Browse files

usbfs: Kill urbs on interface before doing a set_interface



The usb_set_interface documentation says:

 * Also, drivers must not change altsettings while urbs are scheduled for
 * endpoints in that interface; all such urbs must first be completed
 * (perhaps forced by unlinking).

For in kernel drivers we trust the drivers to get this right, but we
cannot trust userspace to get this right, so enforce it by killing any
urbs still pending on the interface.
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
parent 6343e8bf
......@@ -1143,6 +1143,9 @@ static int proc_setintf(struct dev_state *ps, void __user *arg)
return -EFAULT;
if ((ret = checkintf(ps, setintf.interface)))
return ret;
destroy_async_on_interface(ps, setintf.interface);
return usb_set_interface(ps->dev, setintf.interface,
setintf.altsetting);
}
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment