[PATCH v2 1/4] iio: cros_ec: Accept -EOPNOTSUPP as 'not supported' error code

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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: Yu-Hsuan Hsu <yuhsuan@xxxxxxxxxxxx>
Cc: Prashant Malani <pmalani@xxxxxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
v2: Added patch

 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 a66941fdb385..e3aff95493dd 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




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