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>

1 files changed, 3 insertions, 0 deletions

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;
         }