[PATCH v2 4/9] drm/omapdrm: use drm_bridge_chain_get_last_bridge()

[Luca Ceresoli]

Use drm_bridge_chain_get_last_bridge() instead of open coding a loop with
two invocations of drm_bridge_get_next_bridge() per iteration.

Besides being cleaner and more efficient, this change is necessary in
preparation for drm_bridge_get_next_bridge() to get a reference to the
returned bridge.

Signed-off-by: Luca Ceresoli <luca.ceres...@bootlin.com>

---

Changed in v2:
- use cleanup action instead of explicit drm_bridge_put() for consistency
  with other patches in the series
---
 drivers/gpu/drm/omapdrm/omap_drv.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c 
b/drivers/gpu/drm/omapdrm/omap_drv.c
index 
054b71dba6a75b8c42198c4b102a093f43a675a2..794267f0f007850e43949f93be5c98d0e32a84ea
 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -378,10 +378,8 @@ static int omap_display_id(struct omap_dss_device *output)
        struct device_node *node = NULL;
 
        if (output->bridge) {
-               struct drm_bridge *bridge = output->bridge;
-
-               while (drm_bridge_get_next_bridge(bridge))
-                       bridge = drm_bridge_get_next_bridge(bridge);
+               struct drm_bridge *bridge __free(drm_bridge_put) =
+                       
drm_bridge_chain_get_last_bridge(output->bridge->encoder);
 
                node = bridge->of_node;
        }

-- 
2.50.1