This patch is only for nuisance value.  It puts a nag message in the
system log every time usb_unlink_urb() is called for synchronous
unlinking.  My hope is this will speed the process of converting drivers
to use usb_kill_urb().

Don't apply this if it generates too much noise, but otherwise go ahead.
A little prodding never hurt anyone.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>