of/flattree: minor cleanups

 - static-ize some functions
 - add some additional comments

Signed-off-by: Andres Salomon <[email protected]>
Signed-off-by: Grant Likely <[email protected]>
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index af824e7..c9db49c 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -139,12 +139,13 @@
 /**
  * unflatten_dt_node - Alloc and populate a device_node from the flat tree
  * @blob: The parent device tree blob
+ * @mem: Memory chunk to use for allocating device nodes and properties
  * @p: pointer to node in flat tree
  * @dad: Parent struct device_node
  * @allnextpp: pointer to ->allnext from last allocated device_node
  * @fpsize: Size of the node path up at the current depth.
  */
-unsigned long unflatten_dt_node(struct boot_param_header *blob,
+static unsigned long unflatten_dt_node(struct boot_param_header *blob,
 				unsigned long mem,
 				unsigned long *p,
 				struct device_node *dad,
@@ -230,6 +231,7 @@
 		}
 		kref_init(&np->kref);
 	}
+	/* process properties */
 	while (1) {
 		u32 sz, noff;
 		char *pname;
@@ -351,7 +353,7 @@
  * @dt_alloc: An allocator that provides a virtual address to memory
  * for the resulting tree
  */
-void __unflatten_device_tree(struct boot_param_header *blob,
+static void __unflatten_device_tree(struct boot_param_header *blob,
 			     struct device_node **mynodes,
 			     void * (*dt_alloc)(u64 size, u64 align))
 {