[PATCH 4.14 52/61] atm: zatm: fix memcmp casting

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Ivan Bornyakov [ Upstream commit f9c6442a8f0b1dde9e755eb4ff6fa22bcce4eabc ] memcmp() returns int, but eprom_try_esi() cast it to unsigned char. One can lose significant bits and get 0 from

[PATCH 4.14 52/61] atm: zatm: fix memcmp casting

4.14-stable review patch. If anyone has any objections, please let me know. -- From: Ivan Bornyakov [ Upstream commit f9c6442a8f0b1dde9e755eb4ff6fa22bcce4eabc ] memcmp() returns int, but eprom_try_esi() cast it to unsigned char. One can lose significant bits and get 0 from