"mem" is type u8.  We need parenthesis here or it screws up the pointer
math probably leading to an oops.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Cc: stable@kernel.org
Acked-by: NJeff Garzik <jgarzik@redhat.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>