From: Axel Lin <axel.lin@gmail.com>
Date: Sat, 26 Nov 2011 12:19:19 +0000 (+0800)
Subject: regulator: Checking return value of of_get_regulator_init_data
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=4b864af1a370103148e34044670cd9913de5c1be;p=deliverable%2Flinux.git

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 db90919f99c2..2997f11af905 100644
--- 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;