of: document refcount incrementation of of_get_cpu_node()
This function increments refcount. This is worth noting.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/drivers/of/base.c b/drivers/of/base.c
index e87e21d..116666b 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -394,7 +394,8 @@
* before booting secondary cores. This function uses arch_match_cpu_phys_id
* which can be overridden by architecture specific implementation.
*
- * Returns a node pointer for the logical cpu if found, else NULL.
+ * Returns a node pointer for the logical cpu with refcount incremented, use
+ * of_node_put() on it when done. Returns NULL if not found.
*/
struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
{
