[POWERPC] Update documentation for of_find_node_by_type()

The documentation for of_find_node_by_type() incorrectly refers to the
"name" parameter - it should be "type".

Also the behaviour when from == NULL is not really documented, fix that.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 066a6a7..af42dda 100644 (file)
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1171,11 +1171,12 @@ EXPORT_SYMBOL(of_find_node_by_name);
 
 /**
  *     of_find_node_by_type - Find a node by its "device_type" property
- *     @from:  The node to start searching from or NULL, the node
- *             you pass will not be searched, only the next one
- *             will; typically, you pass what the previous call
- *             returned. of_node_put() will be called on it
- *     @name:  The type string to match against
+ *     @from:  The node to start searching from, or NULL to start searching
+ *             the entire device tree. The node you pass will not be
+ *             searched, only the next one will; typically, you pass
+ *             what the previous call returned. of_node_put() will be
+ *             called on from for you.
+ *     @type:  The type string to match against
  *
  *     Returns a node pointer with refcount incremented, use
  *     of_node_put() on it when done.