USB: rio500: simplify locking

Admitting that there can be only one device allows us to drop any
pretense about locking one device or a table of devices.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Neukum 2019-05-09 11:31:00 +02:00 • committed by Greg Kroah-Hartman
commit 95e29e9bbe