of: to support binding numa node to specified device in devicetree
For now, in function device_add, the new device will be forced to
inherit the numa node of its parent. But this will override the device's
numa node which configured in devicetree.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/of/device.c b/drivers/of/device.c
index 8b91ea2..e5f47ce 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -60,11 +60,12 @@
ofdev->name = dev_name(&ofdev->dev);
ofdev->id = -1;
- /* device_add will assume that this device is on the same node as
- * the parent. If there is no parent defined, set the node
- * explicitly */
- if (!ofdev->dev.parent)
- set_dev_node(&ofdev->dev, of_node_to_nid(ofdev->dev.of_node));
+ /*
+ * If this device has not binding numa node in devicetree, that is
+ * of_node_to_nid returns NUMA_NO_NODE. device_add will assume that this
+ * device is on the same node as the parent.
+ */
+ set_dev_node(&ofdev->dev, of_node_to_nid(ofdev->dev.of_node));
return device_add(&ofdev->dev);
}