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From:   cmo@melexis.com
To:     Jonathan Cameron <jic23@kernel.org>
Cc:     linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
        Andy Shevchenko <andy.shevchenko@gmail.com>,
        Crt Mori <cmo@melexis.com>
Subject: [PATCH v3 3/3] iio: temperature: mlx90632 Change return value of sensor measurement channel
Date:   Tue,  6 Sep 2022 11:04:32 +0200
Message-Id: <61da82560512fbbda5f4124a1c907375da822b15.1662454215.git.cmo@melexis.com>
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From: Crt Mori <cmo@melexis.com>

The current EINVAL value is more applicable to embedded library, where
user can actually put the fixed value to the sensor. In case of the
driver if the value of the channel is invalid it is better in inform
userspace that Channel was out of range as that implies more to internal
driver error than invalid input. It also makes for easier debugging of
where the error comes from during the development.

Signed-off-by: Crt Mori <cmo@melexis.com>
---
 drivers/iio/temperature/mlx90632.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/temperature/mlx90632.c b/drivers/iio/temperature/mlx90632.c
index 6b33284eb0b6..aee065a38772 100644
--- a/drivers/iio/temperature/mlx90632.c
+++ b/drivers/iio/temperature/mlx90632.c
@@ -436,7 +436,7 @@ static int mlx90632_channel_new_select(int perform_ret, uint8_t *channel_new,
 		*channel_old = 1;
 		break;
 	default:
-		return -EINVAL;
+		return -ECHRNG;
 	}
 
 	return 0;
-- 
2.34.1