driver core/platform_device_add_resources: set resource to NULL if !res

This makes the res = NULL case more consistant to the res != NULL case
as now both overwrite pdev->resource.

Reviewed-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 9 insertions, 10 deletions

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 58ad8e8ad7a3..667f282f8b7b 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -192,18 +192,17 @@ EXPORT_SYMBOL_GPL(platform_device_alloc);
 int platform_device_add_resources(struct platform_device *pdev,
                                   const struct resource *res, unsigned int num)
 {
-        struct resource *r;
+        struct resource *r = NULL;
 
-        if (!res)
-                return 0;
-
-        r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL);
-        if (r) {
-                pdev->resource = r;
-                pdev->num_resources = num;
-                return 0;
+        if (res) {
+                r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL);
+                if (!r)
+                        return -ENOMEM;
         }
-        return -ENOMEM;
+
+        pdev->resource = r;
+        pdev->num_resources = num;
+        return 0;
 }
 EXPORT_SYMBOL_GPL(platform_device_add_resources);