linux-kernel - [PATCH 3.10 04/77] extcon: max8997: Fix NULL pointer exception on missing pdata

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Message-Id: <20140628174521.910231353@linuxfoundation.org>
Date:	Sat, 28 Jun 2014 10:45:57 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>
Subject: [PATCH 3.10 04/77] extcon: max8997: Fix NULL pointer exception on missing pdata

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

------------------

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

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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/extcon/extcon-max8997.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -712,7 +712,7 @@ static int max8997_muic_probe(struct pla
 		goto err_irq;
 	}
 
-	if (pdata->muic_pdata) {
+	if (pdata && pdata->muic_pdata) {
 		struct max8997_muic_platform_data *muic_pdata
 			= pdata->muic_pdata;
 


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