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Date: Thu, 15 Nov 2012 12:51:36 +0800
From: Axel Lin <axel.lin@...ics.com>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 1/4] pinctrl: dove: Prevent NULL dereference if
of_match_device returns NULL
of_match_device() may return NULL.
Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
drivers/pinctrl/mvebu/pinctrl-dove.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/pinctrl/mvebu/pinctrl-dove.c b/drivers/pinctrl/mvebu/pinctrl-dove.c
index ffe74b2..a8b9b42 100644
--- a/drivers/pinctrl/mvebu/pinctrl-dove.c
+++ b/drivers/pinctrl/mvebu/pinctrl-dove.c
@@ -578,8 +578,12 @@ static struct of_device_id dove_pinctrl_of_match[] __devinitdata = {
static int __devinit dove_pinctrl_probe(struct platform_device *pdev)
{
- const struct of_device_id *match =
- of_match_device(dove_pinctrl_of_match, &pdev->dev);
+ const struct of_device_id *match;
+
+ match = of_match_device(dove_pinctrl_of_match, &pdev->dev);
+ if (!match)
+ return -ENODEV;
+
pdev->dev.platform_data = match->data;
/*
--
1.7.9.5
--
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