Merge tag 'of-graph-drm-2015-04-08' of git://git.pengutronix.de/git/pza/linux into drm-next

drm: Use of-graph helpers to loop over endpoints

Convert all drm callers that use of_graph_get_next_endpoint to loop over
of-graph endpoints to the newly introduced for_each_endpoint_of_node
helper macro.

* tag 'of-graph-drm-2015-04-08' of git://git.pengutronix.de/git/pza/linux:
  drm/rockchip: use for_each_endpoint_of_node macro, drop endpoint reference on break
  drm/rcar-du: use for_each_endpoint_of_node macro
  drm/imx: use for_each_endpoint_of_node macro in imx_drm_encoder_get_mux_id
  drm: use for_each_endpoint_of_node macro in drm_of_find_possible_crtcs
  of: Explicitly include linux/types.h in of_graph.h
  dt-bindings: brcm: rationalize Broadcom documentation naming
  of/unittest: replace 'selftest' with 'unittest'
  Documentation: rename of_selftest.txt to of_unittest.txt
  Documentation: update the of_selftest.txt
  dt: OF_UNITTEST make dependency broken
  MAINTAINERS: Pantelis Antoniou device tree overlay maintainer
  of: Add of_graph_get_port_by_id function
  of: Add for_each_endpoint_of_node helper macro
  of: Decrement refcount of previous endpoint in of_graph_get_next_endpoint

1 files changed, 4 insertions, 16 deletions

diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index a002f53aab0e..db2f5a739e05 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -431,15 +431,6 @@ int imx_drm_encoder_parse_of(struct drm_device *drm,
 }
 EXPORT_SYMBOL_GPL(imx_drm_encoder_parse_of);
 
-static struct device_node *imx_drm_of_get_next_endpoint(
-                const struct device_node *parent, struct device_node *prev)
-{
-        struct device_node *node = of_graph_get_next_endpoint(parent, prev);
-
-        of_node_put(prev);
-        return node;
-}
-
 /*
  * @node: device tree node containing encoder input ports
  * @encoder: drm_encoder
@@ -448,7 +439,7 @@ int imx_drm_encoder_get_mux_id(struct device_node *node,
                                struct drm_encoder *encoder)
 {
         struct imx_drm_crtc *imx_crtc = imx_drm_find_crtc(encoder->crtc);
-        struct device_node *ep = NULL;
+        struct device_node *ep;
         struct of_endpoint endpoint;
         struct device_node *port;
         int ret;
@@ -456,18 +447,15 @@ int imx_drm_encoder_get_mux_id(struct device_node *node,
         if (!node || !imx_crtc)
                 return -EINVAL;
 
-        do {
-                ep = imx_drm_of_get_next_endpoint(node, ep);
-                if (!ep)
-                        break;
-
+        for_each_endpoint_of_node(node, ep) {
                 port = of_graph_get_remote_port(ep);
                 of_node_put(port);
                 if (port == imx_crtc->crtc->port) {
                         ret = of_graph_parse_endpoint(ep, &endpoint);
+                        of_node_put(ep);
                         return ret ? ret : endpoint.port;
                 }
-        } while (ep);
+        }
 
         return -EINVAL;
 }