Commit 3e1c715e authored by Tzung-Bi Shih's avatar Tzung-Bi Shih
Browse files

platform/chrome: cros_ec_proto: return -EPROTO if empty payload 



cros_ec_wait_until_complete() sends EC_CMD_GET_COMMS_STATUS which expects
to receive sizeof(struct ec_response_get_comms_status) from
cros_ec_xfer_command().

Return -EPROTO if cros_ec_xfer_command() returns 0.

Reviewed-by: default avatarGuenter Roeck <groeck@chromium.org>
Signed-off-by: default avatarTzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220718050914.2267370-11-tzungbi@kernel.org
parent 82c9b7ed

drivers/platform/chrome/cros_ec_proto.c

+5 −0
Original line number Diff line number Diff line
@@ -163,6 +163,11 @@ static int cros_ec_wait_until_complete(struct cros_ec_device *ec_dev, uint32_t * 
		if (msg->result != EC_RES_SUCCESS)

			return ret;



		if (ret == 0) {

			ret = -EPROTO;

			break;

		}



		if (!(status->flags & EC_COMMS_STATUS_PROCESSING))

			return ret;

	}