[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>

1 files changed, 6 insertions, 5 deletions

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 066a6a7a25b8..af42ddab3ab4 100644
--- 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.