power-supply: Return early if "power-supplies" property isn't valid
If power-supply's DT node doesn't have a valid "power-supplies" entry, then
power_supply_check_supplies() should return early instead of trying to allocate
memory for "supplied_from" array.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 10f0b57..414384a 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -226,6 +226,10 @@
of_node_put(np);
} while (np);
+ /* Missing valid "power-supplies" entries */
+ if (cnt == 1)
+ return 0;
+
/* All supplies found, allocate char ** array for filling */
psy->supplied_from = devm_kzalloc(psy->dev, sizeof(psy->supplied_from),
GFP_KERNEL);