[PATCH v1 1/1] power: supply: generic-adc-battery: Fix temperature IIO channel conversion

[Svyatoslav Ryhel]

Temperature IIO channel data is provided in milli-degrees, while
POWER_SUPPLY_PROP_TEMP is expected to be in deci-degrees. Adjust the
existing logic to reflect this conversion properly.

Fixes: 33088c0513818 ("power: supply: generic-adc-battery: add temperature support")
Signed-off-by: Svyatoslav Ryhel <clamor95@xxxxxxxxx>
---
 drivers/power/supply/generic-adc-battery.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/power/supply/generic-adc-battery.c b/drivers/power/supply/generic-adc-battery.c
index 185f55d2fd709..f11a5c794e7e8 100644
--- a/drivers/power/supply/generic-adc-battery.c
+++ b/drivers/power/supply/generic-adc-battery.c
@@ -90,12 +90,17 @@ static int gab_read_channel(struct gab *adc_bat, enum gab_chan_type channel,
 	int ret;
 
 	ret = iio_read_channel_processed(adc_bat->channel[channel], result);
-	if (ret < 0)
+	if (ret < 0) {
 		dev_err(&adc_bat->psy->dev, "read channel error: %d\n", ret);
+		return ret;
+	}
+
+	if (channel == GAB_TEMP)
+		*result /= 100; /* Convert from milli- to deci-degree */
 	else
 		*result *= 1000;
 
-	return ret;
+	return 0;
 }
 
 static int gab_get_property(struct power_supply *psy,
-- 
2.53.0