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 --- drivers/power/power_supply_core.c | 4 ++++ 1 file changed, 4 insertions(+)
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 @@ static int power_supply_check_supplies(struct power_supply *psy) 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);