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power: supply: max17040: Check iio_read_channel_processed() return code 

Since iio_read_channel_processed() may fail, return its exit code on error.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 814755c48f ("power: max17040: get thermal data from adc if available")
Signed-off-by: Ivan Abramov <i.abramov@mt-integration.ru>
Link: https://patch.msgid.link/20251008133648.559286-1-i.abramov@mt-integration.ru
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Ivan Abramov 2025-10-08 16:36:47 +03:00 committed by Sebastian Reichel
parent 92ec7e7b86
commit 2c68ac48c5
1 changed files with 5 additions and 1 deletions
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6
drivers/power/supply/max17040_battery.c
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@ -388,6 +388,7 @@ static int max17040_get_property(struct power_supply *psy,
union power_supply_propval *val) union power_supply_propval *val)
{ {
struct max17040_chip *chip = power_supply_get_drvdata(psy); struct max17040_chip *chip = power_supply_get_drvdata(psy);
int ret;
switch (psp) { switch (psp) {
case POWER_SUPPLY_PROP_ONLINE: case POWER_SUPPLY_PROP_ONLINE:
@ -410,7 +411,10 @@ static int max17040_get_property(struct power_supply *psy,
if (!chip->channel_temp) if (!chip->channel_temp)
return -ENODATA; return -ENODATA;
iio_read_channel_processed(chip->channel_temp, &val->intval); ret = iio_read_channel_processed(chip->channel_temp, &val->intval);
if (ret)
return ret;
val->intval /= 100; /* Convert from milli- to deci-degree */ val->intval /= 100; /* Convert from milli- to deci-degree */
break; break;