[PATCH 28/34] drm/sti: dvo: convert to devm_drm_bridge_alloc() API

[Luca Ceresoli]

This is the new API for allocating DRM bridges.

This driver allocates the DRM bridge separately from the main driver
private struct, which prevents using the new devm_drm_bridge_alloc()
API. Simplify the code by replacing the struct drm_bridge opinter with an
embedded struct drm_bridge inside the provate struct, to make use of the
new API with the same code flow.

Signed-off-by: Luca Ceresoli <luca.ceresoli@xxxxxxxxxxx>

---

Cc: Alain Volmat <alain.volmat@xxxxxxxxxxx>
Cc: Raphael Gallais-Pou <rgallaispou@xxxxxxxxx>
---
 drivers/gpu/drm/sti/sti_dvo.c | 29 +++++++++++------------------
 1 file changed, 11 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/sti/sti_dvo.c b/drivers/gpu/drm/sti/sti_dvo.c
index 74a1eef4674eeabc445b53b380e325f785242024..7484d3c3f4ed5fac7eab408e30cbe2f6b87f27e5 100644
--- a/drivers/gpu/drm/sti/sti_dvo.c
+++ b/drivers/gpu/drm/sti/sti_dvo.c
@@ -97,7 +97,7 @@ struct sti_dvo {
 	struct dvo_config *config;
 	bool enabled;
 	struct drm_encoder *encoder;
-	struct drm_bridge *bridge;
+	struct drm_bridge bridge;
 };
 
 struct sti_dvo_connector {
@@ -439,7 +439,6 @@ static int sti_dvo_bind(struct device *dev, struct device *master, void *data)
 	struct drm_encoder *encoder;
 	struct sti_dvo_connector *connector;
 	struct drm_connector *drm_connector;
-	struct drm_bridge *bridge;
 	int err;
 
 	/* Set the drm device handle */
@@ -455,20 +454,14 @@ static int sti_dvo_bind(struct device *dev, struct device *master, void *data)
 
 	connector->dvo = dvo;
 
-	bridge = devm_kzalloc(dev, sizeof(*bridge), GFP_KERNEL);
-	if (!bridge)
-		return -ENOMEM;
-
-	bridge->driver_private = dvo;
-	bridge->funcs = &sti_dvo_bridge_funcs;
-	bridge->of_node = dvo->dev.of_node;
-	drm_bridge_add(bridge);
+	dvo->bridge.driver_private = dvo;
+	dvo->bridge.of_node = dvo->dev.of_node;
+	drm_bridge_add(&dvo->bridge);
 
-	err = drm_bridge_attach(encoder, bridge, NULL, 0);
+	err = drm_bridge_attach(encoder, &dvo->bridge, NULL, 0);
 	if (err)
 		return err;
 
-	dvo->bridge = bridge;
 	connector->encoder = encoder;
 	dvo->encoder = encoder;
 
@@ -490,7 +483,7 @@ static int sti_dvo_bind(struct device *dev, struct device *master, void *data)
 	return 0;
 
 err_sysfs:
-	drm_bridge_remove(bridge);
+	drm_bridge_remove(&dvo->bridge);
 	return -EINVAL;
 }
 
@@ -499,7 +492,7 @@ static void sti_dvo_unbind(struct device *dev,
 {
 	struct sti_dvo *dvo = dev_get_drvdata(dev);
 
-	drm_bridge_remove(dvo->bridge);
+	drm_bridge_remove(&dvo->bridge);
 }
 
 static const struct component_ops sti_dvo_ops = {
@@ -515,10 +508,10 @@ static int sti_dvo_probe(struct platform_device *pdev)
 
 	DRM_INFO("%s\n", __func__);
 
-	dvo = devm_kzalloc(dev, sizeof(*dvo), GFP_KERNEL);
-	if (!dvo) {
-		DRM_ERROR("Failed to allocate memory for DVO\n");
-		return -ENOMEM;
+	dvo = devm_drm_bridge_alloc(dev, struct sti_dvo, bridge, &sti_dvo_bridge_funcs);
+	if (IS_ERR(dvo)) {
+		DRM_ERROR("Failed to allocate DVO\n");
+		return PTR_ERR(dvo);
 	}
 
 	dvo->dev = pdev->dev;

-- 
2.49.0