From: Ivan Abramov Date: Wed, 8 Oct 2025 13:36:47 +0000 (+0300) Subject: power: supply: max17040: Check iio_read_channel_processed() return code X-Git-Tag: v6.19-rc1~137^2~13 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c68ac48c52ad146523f32b01d70009622bf81aa;p=thirdparty%2Fkernel%2Flinux.git 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: 814755c48f8b ("power: max17040: get thermal data from adc if available") Signed-off-by: Ivan Abramov Link: https://patch.msgid.link/20251008133648.559286-1-i.abramov@mt-integration.ru Signed-off-by: Sebastian Reichel --- diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c index c1640bc6accd2..48453508688a4 100644 --- a/drivers/power/supply/max17040_battery.c +++ b/drivers/power/supply/max17040_battery.c @@ -388,6 +388,7 @@ static int max17040_get_property(struct power_supply *psy, union power_supply_propval *val) { struct max17040_chip *chip = power_supply_get_drvdata(psy); + int ret; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: @@ -410,7 +411,10 @@ static int max17040_get_property(struct power_supply *psy, if (!chip->channel_temp) 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 */ break;