linux-kernel - [PATCH 3.12 098/181] extcon: max8997: Fix NULL pointer exception on missing pdata

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Message-Id: <4e8f12577fa4da651e1d99d3c56dcfd0066ce180.1404128998.git.jslaby@suse.cz>
Date:	Mon, 30 Jun 2014 13:51:59 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 098/181] extcon: max8997: Fix NULL pointer exception on missing pdata

From: Krzysztof Kozlowski <k.kozlowski@...sung.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit dfee4111febf3d9ef3a640b2cd6205c75f4e7e3d upstream.

Fix NULL pointer exception when platform data is not supplied. The
driver dereferenced pdata pointer where it could be NULL.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Fixes: 810d601f07c
Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/extcon/extcon-max8997.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index 67d6738d85a0..09f4a9374cf5 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -712,7 +712,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
 		goto err_irq;
 	}
 
-	if (pdata->muic_pdata) {
+	if (pdata && pdata->muic_pdata) {
 		struct max8997_muic_platform_data *muic_pdata
 			= pdata->muic_pdata;
 
-- 
2.0.0

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