A follow-up patch will extend the number of errors reported by cros_ec_cmd_xfer_status(). Specifically, the function will return -EOPNOTSUPP if a command is not supported by the EC. Prepare for it. Cc: Gwendal Grignou <gwendal@xxxxxxxxxxxx> Cc: Yu-Hsuan Hsu <yuhsuan@xxxxxxxxxxxx> Cc: Prashant Malani <pmalani@xxxxxxxxxxxx> Cc: Brian Norris <briannorris@xxxxxxxxxxxx> Acked-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Reviewed-by: Brian Norris <briannorris@xxxxxxxxxxxx> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> --- v5: No change v4: No change v3: No change v2: No change drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c index 130ab8ce0269..d71e9064c789 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c @@ -73,7 +73,7 @@ static int cros_ec_sensors_read(struct iio_dev *indio_dev, st->core.param.sensor_offset.flags = 0; ret = cros_ec_motion_send_host_cmd(&st->core, 0); - if (ret == -EPROTO) { + if (ret == -EPROTO || ret == -EOPNOTSUPP) { /* Reading calibscale is not supported on older EC. */ *val = 1; *val2 = 0; -- 2.17.1