linux-kernel - [PATCH] regulator: Checking return value of of_get_regulator_init

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Message-ID: <1322309959.6001.1.camel@phoenix>
Date:	Sat, 26 Nov 2011 20:19:19 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Rajendra Nayak <rnayak@...com>, Liam Girdwood <lrg@...com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] 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@...il.com>
---
 drivers/regulator/fixed.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index 716ea37..639e19d 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;
-- 
1.7.5.4



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