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driver core: Check if r->name is valid in platform_get_resource_byname()
author
Peter Ujfalusi
<peter.ujfalusi@ti.com>
Thu, 23 Aug 2012 14:10:00 +0000
(17:10 +0300)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Thu, 6 Sep 2012 20:29:11 +0000
(13:29 -0700)
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>
drivers/base/platform.c
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diff --git
a/drivers/base/platform.c
b/drivers/base/platform.c
index
3f8077c
..
ddeca14
100644
(file)
--- 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;
}