From: Peter Ujfalusi <peter.ujfalusi@ti.com>
Date: Thu, 23 Aug 2012 14:10:00 +0000 (+0300)
Subject: driver core: Check if r->name is valid in platform_get_resource_byname()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=1b8cb9290671a4c025c16a51d316031f9ec04976;p=linux-beck.git

driver core: Check if r->name is valid in platform_get_resource_byname()

Safety check for the validity of the resource name before calling strcmp().
If the resource name is NULL do not compare it, just skip it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 3f8077ce585c..ddeca142293c 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -103,6 +103,9 @@ struct resource *platform_get_resource_byname(struct platform_device *dev,
 	for (i = 0; i < dev->num_resources; i++) {
 		struct resource *r = &dev->resource[i];
 
+		if (unlikely(!r->name))
+			continue;
+
 		if (type == resource_type(r) && !strcmp(r->name, name))
 			return r;
 	}