[PATCH] iio: lidar: return -EIO on invalid signal

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Returning zero from the measurment function has the side effect of
corrupting the triggered buffer readings, better to use -EIO than a
zero measurement reading.

Signed-off-by: Matt Ranostay <mranostay@xxxxxxxxx>
---
 drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
index 961f9f99..359beac 100644
--- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
+++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
@@ -130,10 +130,10 @@ static int lidar_get_measurement(struct lidar_data *data, u16 *reg)
 		if (ret < 0)
 			break;
 
-		/* return 0 since laser is likely pointed out of range */
+		/* return -EIO since laser is likely pointed out of range */
 		if (ret & LIDAR_REG_STATUS_INVALID) {
 			*reg = 0;
-			ret = 0;
+			ret = -EIO;
 			break;
 		}
 
-- 
1.9.1

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