From: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Date: Wed, 9 Apr 2014 13:20:14 +0000 (+0200)
Subject: extcon: max8997: Fix NULL pointer exception on missing pdata
X-Git-Tag: firefly_0821_release~3679^2~2025
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f9d3242c9b1657aa519a88549836c67236bc54c7;p=firefly-linux-kernel-4.4.55.git

extcon: max8997: Fix NULL pointer exception on missing pdata

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@samsung.com>
Fixes: 810d601f07c
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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;