tree 34827fb9a211f2858d3a44616d37e0f7df0c15a4
parent 269ad6e018146dafb70c9a40e546f73752d44db2
author Dan Carpenter <dan.carpenter@oracle.com> 1445253541 +0300
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1454909150 -0800

misc: mic/scif: fix wrap around tests

Signed integer overflow is undefined.  Also I added a check for
"(offset < 0)" in scif_unregister() because that makes it match the
other conditions and because I didn't want to subtract a negative.

Fixes: ba612aa8b487 ('misc: mic: SCIF memory registration and unregistration')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>