From c9398455b046fc7a44b6dd53d9d6fe4b11c21700 Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Fri, 20 Aug 2021 02:51:11 +0300 Subject: [PATCH] power: supply: core: Fix parsing of battery chemistry/technology The power_supply_get_battery_info() fails if device-chemistry property is missing in a device-tree because error variable is propagated to the final return of the function, fix it. Fixes: 4eef766b7d4d ("power: supply: core: Parse battery chemistry/technology") Signed-off-by: Dmitry Osipenko Reviewed-by: Linus Walleij Signed-off-by: Sebastian Reichel --- drivers/power/supply/power_supply_core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index dd62c871b2b5..0c2132c7f5d4 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -619,8 +619,7 @@ int power_supply_get_battery_info(struct power_supply *psy, * Documentation/power/power_supply_class.rst. */ - err = of_property_read_string(battery_np, "device-chemistry", &value); - if (!err) { + if (!of_property_read_string(battery_np, "device-chemistry", &value)) { if (!strcmp("nickel-cadmium", value)) info->technology = POWER_SUPPLY_TECHNOLOGY_NiCd; else if (!strcmp("nickel-metal-hydride", value)) -- 2.20.1