a8f77c63ba
cros_ec_query_all() uses cros_ec_get_host_command_version_mask() to query the supported MKBP version; cros_ec_get_host_command_version_mask() uses send_command() for transferring the host command. Returning >=0 from send_command() only denotes the transfer was success. cros_ec_get_host_command_version_mask() should check if EC wasn't happy by checking `msg->result`. Add a Kunit test for returning error in `msg->result` in cros_ec_get_host_command_version_mask(). For the case, cros_ec_query_all() should find the EC device doesn't support MKBP. Reviewed-by: Guenter Roeck <groeck@chromium.org> Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://lore.kernel.org/r/20220609084957.3684698-16-tzungbi@kernel.org