The key size is tested by hex2bin() already (as '\0' isn't an hex digit)
Suggested-by: NAndy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: NYehezkel Bernat <yehezkel.bernat@intel.com>
Acked-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>