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platform/chrome: cros_ec_proto: handle empty payload in getting info legacy
authorTzung-Bi Shih <tzungbi@kernel.org>
Thu, 9 Jun 2022 08:49:48 +0000 (08:49 +0000)
committerTzung-Bi Shih <tzungbi@kernel.org>
Fri, 10 Jun 2022 02:31:43 +0000 (02:31 +0000)
commitd394ab5c062a7701b9af04e012d3a4c1e1447f47
tree3d2f41d42ea24bd6fd2de7af07334d090baf2c60tree | snapshot
parentcce5d551809c54e4067933e900239f58281390aacommit | diff
platform/chrome: cros_ec_proto: handle empty payload in getting info legacy

cros_ec_get_proto_info_legacy() expects to receive
sizeof(struct ec_response_hello) from send_command().  The payload is
valid only if the return value is positive.

Return -EPROTO if send_command() returns 0 in
cros_ec_get_proto_info_legacy().

Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-13-tzungbi@kernel.org
drivers/platform/chrome/cros_ec_proto.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git