[PATCH v2 03/11] drm/msm/hdmi: switch to of_drm_get_bridge_by_endpoint()

[Luca Ceresoli]

This driver calls drm_of_find_panel_or_bridge() with a NULL pointer in the
@panel parameter, thus using a reduced feature set of that function.
Replace this call with the simpler of_drm_get_bridge_by_endpoint().

Since of_drm_get_bridge_by_endpoint() increases the refcount of the
returned bridge, ensure it is put on removal.

Signed-off-by: Luca Ceresoli <luca.ceresoli at bootlin.com>
---
 drivers/gpu/drm/msm/hdmi/hdmi.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index 852abb2466f0..57c25a09b354 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -287,9 +287,9 @@ static int msm_hdmi_dev_probe(struct platform_device *pdev)
 	spin_lock_init(&hdmi->reg_lock);
 	mutex_init(&hdmi->state_mutex);
 
-	ret = drm_of_find_panel_or_bridge(dev_of_node(dev), 1, 0, NULL, &hdmi->next_bridge);
-	if (ret && ret != -ENODEV)
-		return ret;
+	hdmi->next_bridge = of_drm_get_bridge_by_endpoint(dev_of_node(dev), 1, 0);
+	if (IS_ERR(hdmi->next_bridge) && PTR_ERR(hdmi->next_bridge) != -ENODEV)
+		return PTR_ERR(hdmi->next_bridge);
 
 	hdmi->mmio = msm_ioremap(pdev, "core_physical");
 	if (IS_ERR(hdmi->mmio))
@@ -383,6 +383,7 @@ static void msm_hdmi_dev_remove(struct platform_device *pdev)
 	component_del(&pdev->dev, &msm_hdmi_ops);
 
 	msm_hdmi_put_phy(hdmi);
+	drm_bridge_put(hdmi->next_bridge);
 }
 
 static int msm_hdmi_runtime_suspend(struct device *dev)

-- 
2.53.0