When charging, the fuel gauge reports U16_MAX as time to empty.
Ignoring this special case (as this driver currently does), causes the
remaining time to be reported as ~102hours, which is incorrect.

Update the code to not return anything in this case.

Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: André Draszik <andre.draszik@linaro.org>
---
 drivers/power/supply/max17042_battery.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c
index 39091fb31711..0a6960bbf3a2 100644
--- a/drivers/power/supply/max17042_battery.c
+++ b/drivers/power/supply/max17042_battery.c
@@ -430,6 +430,10 @@ static int max17042_get_property(struct power_supply *psy,
 		if (ret < 0)
 			return ret;
 
+		/* when charging, the value is not meaningful */
+		if (data == U16_MAX)
+			return -ENODATA;
+
 		val->intval = data * 5625 / 1000;
 		break;
 	default:

-- 
2.53.0.473.g4a7958ca14-goog