regulator: Checking return value of of_get_regulator_init_data

of_get_regulator_init_data() may return NULL, thus
check the return value to avoid NULL pointer dereference.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index db90919f99c2da716c8dc6d3489e77ae8537df6c..2997f11af90553840520c9d4228b8541eec36fb3 100644 (file)
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -64,6 +64,9 @@ struct fixed_voltage_config *of_get_fixed_voltage_config(struct device *dev)
                return NULL;
 
        config->init_data = of_get_regulator_init_data(dev);
+       if (!config->init_data)
+               return NULL;
+
        init_data = config->init_data;
 
        config->supply_name = init_data->constraints.name;