power: supply: core: Use device_property_string_array_count()

Use device_property_string_array_count() to get number of strings
in a string array property.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c
index 1a2440e..8dbd119 100644 (file)
--- a/drivers/power/supply/power_supply_core.c
+++ b/drivers/power/supply/power_supply_core.c
@@ -283,8 +283,7 @@ static int power_supply_check_supplies(struct power_supply *psy)
        if (!psy->dev.parent)
                return 0;
 
-       nval = device_property_read_string_array(psy->dev.parent,
-                                                "supplied-from", NULL, 0);
+       nval = device_property_string_array_count(psy->dev.parent, "supplied-from");
        if (nval <= 0)
                return 0;