[PATCH 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.ceresoli at bootlin.com>
---
 drivers/gpu/drm/omapdrm/omap_drv.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index 054b71dba6a75b8c42198c4b102a093f43a675a2..3bbcec01428a6f290afdfa40ef6f79629539a584 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -378,12 +378,12 @@ 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 =
+			drm_bridge_chain_get_last_bridge(output->bridge->encoder);
 
 		node = bridge->of_node;
+
+		drm_bridge_put(bridge);
 	}
 
 	return node ? of_alias_get_id(node, "display") : -ENODEV;

-- 
2.50.0