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    Subject[RESEND PATCH 11/11] platform/chrome: cros_ec_proto: return -EPROTO if empty payload
    Date
    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.

    Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
    ---
    drivers/platform/chrome/cros_ec_proto.c | 5 +++++
    1 file changed, 5 insertions(+)

    diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
    index 5323edddb540..0c7042aa2640 100644
    --- a/drivers/platform/chrome/cros_ec_proto.c
    +++ b/drivers/platform/chrome/cros_ec_proto.c
    @@ -166,6 +166,11 @@ static int cros_ec_wait_until_complete(struct cros_ec_device *ec_dev, uint32_t *
    break;
    }

    + if (ret == 0) {
    + ret = -EPROTO;
    + break;
    + }
    +
    if (!(status->flags & EC_COMMS_STATUS_PROCESSING))
    break;
    }
    --
    2.37.0.rc0.161.g10f37bed90-goog
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