From: Luca Ceresoli <luca.ceresoli@bootlin.com>
Date: Fri, 9 May 2025 13:53:28 +0000 (+0200)
Subject: drm: convert many bridge drivers from devm_kzalloc() to devm_drm_bridge_alloc() API
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=9c399719cfb98fd92c7b76dcd57098e5e3ca5cda;p=users%2Fjedix%2Flinux-maple.git

drm: convert many bridge drivers from devm_kzalloc() to devm_drm_bridge_alloc() API

devm_drm_bridge_alloc() is the new API to be used for allocating (and
partially initializing) a private driver struct embedding a struct
drm_bridge.

For many drivers having a simple code flow in the probe function, this
commit does a mass conversion automatically with the following semantic
patch. The changes have been reviewed manually for correctness as well as
to find any false positives.

The patch has been applied with the explicit exclusion of bridge/panel.c,
handled by a separate patch.

After applying the semantic patch, manually fixed these issues:

 - 4 drivers need ERR_CAST() instead of PTR_ERR() as the function calling
   devm_drm_bridge_alloc() returns a pointer
 - re-added empty lines and comments that the script had removed but that
   should stay

  @@
  type T;
  identifier C;
  identifier BR;
  expression DEV;
  expression FUNCS;
  @@
  -T *C;
  +T *C;
   ...
  (
  -C = devm_kzalloc(DEV, ...);
  -if (!C)
  -    return -ENOMEM;
  +C = devm_drm_bridge_alloc(DEV, T, BR, FUNCS);
  +if (IS_ERR(C))
  +     return PTR_ERR(C);
  |
  -C = devm_kzalloc(DEV, ...);
  -if (!C)
  -    return ERR_PTR(-ENOMEM);
  +C = devm_drm_bridge_alloc(DEV, T, BR, FUNCS);
  +if (IS_ERR(C))
  +     return PTR_ERR(C);
  )
   ...
  -C->BR.funcs = FUNCS;

Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> # microchip-lvds.c
Reviewed-by: Douglas Anderson <dianders@chromium.org> # parade-ps8640
Tested-by: Douglas Anderson <dianders@chromium.org> # parade-ps8640
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250509-drm-bridge-convert-to-alloc-api-v3-2-b8bc1f16d7aa@bootlin.com
[Luca: fixed trivial patch conflict in adv7511_drv.c while applying]
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---

diff --git a/drivers/gpu/drm/adp/adp-mipi.c b/drivers/gpu/drm/adp/adp-mipi.c
index 2b60128e2c69..cba7d32150a9 100644
--- a/drivers/gpu/drm/adp/adp-mipi.c
+++ b/drivers/gpu/drm/adp/adp-mipi.c
@@ -229,9 +229,10 @@ static int adp_mipi_probe(struct platform_device *pdev)
 {
 	struct adp_mipi_drv_private *adp;
 
-	adp = devm_kzalloc(&pdev->dev, sizeof(*adp), GFP_KERNEL);
-	if (!adp)
-		return -ENOMEM;
+	adp = devm_drm_bridge_alloc(&pdev->dev, struct adp_mipi_drv_private,
+				    bridge, &adp_dsi_bridge_funcs);
+	if (IS_ERR(adp))
+		return PTR_ERR(adp);
 
 	adp->mipi = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(adp->mipi)) {
@@ -241,7 +242,6 @@ static int adp_mipi_probe(struct platform_device *pdev)
 
 	adp->dsi.dev = &pdev->dev;
 	adp->dsi.ops = &adp_dsi_host_ops;
-	adp->bridge.funcs = &adp_dsi_bridge_funcs;
 	adp->bridge.of_node = pdev->dev.of_node;
 	adp->bridge.type = DRM_MODE_CONNECTOR_DSI;
 	dev_set_drvdata(&pdev->dev, adp);
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index 8b7548448615..022b6d9c2a1f 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -1153,9 +1153,10 @@ static int adv7511_probe(struct i2c_client *i2c)
 	if (!dev->of_node)
 		return -EINVAL;
 
-	adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL);
-	if (!adv7511)
-		return -ENOMEM;
+	adv7511 = devm_drm_bridge_alloc(dev, struct adv7511, bridge,
+					&adv7511_bridge_funcs);
+	if (IS_ERR(adv7511))
+		return PTR_ERR(adv7511);
 
 	adv7511->i2c_main = i2c;
 	adv7511->powered = false;
@@ -1255,7 +1256,6 @@ static int adv7511_probe(struct i2c_client *i2c)
 	regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL,
 		     ADV7511_CEC_CTRL_POWER_DOWN);
 
-	adv7511->bridge.funcs = &adv7511_bridge_funcs;
 	adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT |
 		DRM_BRIDGE_OP_EDID |
 		DRM_BRIDGE_OP_HDMI |
diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
index a83020d6576f..ba0fc149a9e7 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
@@ -1193,9 +1193,10 @@ static int anx78xx_i2c_probe(struct i2c_client *client)
 	bool found = false;
 	int err;
 
-	anx78xx = devm_kzalloc(&client->dev, sizeof(*anx78xx), GFP_KERNEL);
-	if (!anx78xx)
-		return -ENOMEM;
+	anx78xx = devm_drm_bridge_alloc(&client->dev, struct anx78xx, bridge,
+					&anx78xx_bridge_funcs);
+	if (IS_ERR(anx78xx))
+		return PTR_ERR(anx78xx);
 
 	pdata = &anx78xx->pdata;
 
@@ -1306,8 +1307,6 @@ static int anx78xx_i2c_probe(struct i2c_client *client)
 		goto err_poweroff;
 	}
 
-	anx78xx->bridge.funcs = &anx78xx_bridge_funcs;
-
 	drm_bridge_add(&anx78xx->bridge);
 
 	/* If cable is pulled out, just poweroff and wait for HPD event */
diff --git a/drivers/gpu/drm/bridge/aux-bridge.c b/drivers/gpu/drm/bridge/aux-bridge.c
index c179b86d208f..5b219e3b87b1 100644
--- a/drivers/gpu/drm/bridge/aux-bridge.c
+++ b/drivers/gpu/drm/bridge/aux-bridge.c
@@ -109,9 +109,10 @@ static int drm_aux_bridge_probe(struct auxiliary_device *auxdev,
 {
 	struct drm_aux_bridge_data *data;
 
-	data = devm_kzalloc(&auxdev->dev, sizeof(*data), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
+	data = devm_drm_bridge_alloc(&auxdev->dev, struct drm_aux_bridge_data,
+				     bridge, &drm_aux_bridge_funcs);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
 
 	data->dev = &auxdev->dev;
 	data->next_bridge = devm_drm_of_get_bridge(&auxdev->dev, auxdev->dev.of_node, 0, 0);
@@ -119,7 +120,6 @@ static int drm_aux_bridge_probe(struct auxiliary_device *auxdev,
 		return dev_err_probe(&auxdev->dev, PTR_ERR(data->next_bridge),
 				     "failed to acquire drm_bridge\n");
 
-	data->bridge.funcs = &drm_aux_bridge_funcs;
 	data->bridge.of_node = data->dev->of_node;
 
 	/* passthrough data, allow everything */
diff --git a/drivers/gpu/drm/bridge/aux-hpd-bridge.c b/drivers/gpu/drm/bridge/aux-hpd-bridge.c
index b3f588b71a7d..3eb411f874e4 100644
--- a/drivers/gpu/drm/bridge/aux-hpd-bridge.c
+++ b/drivers/gpu/drm/bridge/aux-hpd-bridge.c
@@ -171,12 +171,13 @@ static int drm_aux_hpd_bridge_probe(struct auxiliary_device *auxdev,
 {
 	struct drm_aux_hpd_bridge_data *data;
 
-	data = devm_kzalloc(&auxdev->dev, sizeof(*data), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
+	data = devm_drm_bridge_alloc(&auxdev->dev,
+				     struct drm_aux_hpd_bridge_data, bridge,
+				     &drm_aux_hpd_bridge_funcs);
+	if (IS_ERR(data))
+		return PTR_ERR(data);
 
 	data->dev = &auxdev->dev;
-	data->bridge.funcs = &drm_aux_hpd_bridge_funcs;
 	data->bridge.of_node = dev_get_platdata(data->dev);
 	data->bridge.ops = DRM_BRIDGE_OP_HPD;
 	data->bridge.type = id->driver_data;
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index b431e7efd1f0..cb5f5a8c539a 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -2389,9 +2389,10 @@ static int cdns_mhdp_probe(struct platform_device *pdev)
 	int ret;
 	int irq;
 
-	mhdp = devm_kzalloc(dev, sizeof(*mhdp), GFP_KERNEL);
-	if (!mhdp)
-		return -ENOMEM;
+	mhdp = devm_drm_bridge_alloc(dev, struct cdns_mhdp_device, bridge,
+				     &cdns_mhdp_bridge_funcs);
+	if (IS_ERR(mhdp))
+		return PTR_ERR(mhdp);
 
 	clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(clk)) {
@@ -2481,7 +2482,6 @@ static int cdns_mhdp_probe(struct platform_device *pdev)
 	mhdp->display_fmt.bpc = 8;
 
 	mhdp->bridge.of_node = pdev->dev.of_node;
-	mhdp->bridge.funcs = &cdns_mhdp_bridge_funcs;
 	mhdp->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
 			   DRM_BRIDGE_OP_HPD;
 	mhdp->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
diff --git a/drivers/gpu/drm/bridge/chipone-icn6211.c b/drivers/gpu/drm/bridge/chipone-icn6211.c
index 634c5b030667..814713c5bea9 100644
--- a/drivers/gpu/drm/bridge/chipone-icn6211.c
+++ b/drivers/gpu/drm/bridge/chipone-icn6211.c
@@ -691,9 +691,10 @@ static int chipone_common_probe(struct device *dev, struct chipone **icnr)
 	struct chipone *icn;
 	int ret;
 
-	icn = devm_kzalloc(dev, sizeof(struct chipone), GFP_KERNEL);
-	if (!icn)
-		return -ENOMEM;
+	icn = devm_drm_bridge_alloc(dev, struct chipone, bridge,
+				    &chipone_bridge_funcs);
+	if (IS_ERR(icn))
+		return PTR_ERR(icn);
 
 	icn->dev = dev;
 
@@ -701,7 +702,6 @@ static int chipone_common_probe(struct device *dev, struct chipone **icnr)
 	if (ret)
 		return ret;
 
-	icn->bridge.funcs = &chipone_bridge_funcs;
 	icn->bridge.type = DRM_MODE_CONNECTOR_DPI;
 	icn->bridge.of_node = dev->of_node;
 
diff --git a/drivers/gpu/drm/bridge/chrontel-ch7033.c b/drivers/gpu/drm/bridge/chrontel-ch7033.c
index 210c45c1efd4..ab9274793356 100644
--- a/drivers/gpu/drm/bridge/chrontel-ch7033.c
+++ b/drivers/gpu/drm/bridge/chrontel-ch7033.c
@@ -536,9 +536,10 @@ static int ch7033_probe(struct i2c_client *client)
 	unsigned int val;
 	int ret;
 
-	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
+	priv = devm_drm_bridge_alloc(dev, struct ch7033_priv, bridge,
+				     &ch7033_bridge_funcs);
+	if (IS_ERR(priv))
+		return PTR_ERR(priv);
 
 	dev_set_drvdata(dev, priv);
 
@@ -575,7 +576,6 @@ static int ch7033_probe(struct i2c_client *client)
 	}
 
 	INIT_LIST_HEAD(&priv->bridge.list);
-	priv->bridge.funcs = &ch7033_bridge_funcs;
 	priv->bridge.of_node = dev->of_node;
 	drm_bridge_add(&priv->bridge);
 
diff --git a/drivers/gpu/drm/bridge/cros-ec-anx7688.c b/drivers/gpu/drm/bridge/cros-ec-anx7688.c
index c8abd9920fee..a35dae9b56e2 100644
--- a/drivers/gpu/drm/bridge/cros-ec-anx7688.c
+++ b/drivers/gpu/drm/bridge/cros-ec-anx7688.c
@@ -103,9 +103,10 @@ static int cros_ec_anx7688_bridge_probe(struct i2c_client *client)
 	u8 buffer[4];
 	int ret;
 
-	anx7688 = devm_kzalloc(dev, sizeof(*anx7688), GFP_KERNEL);
-	if (!anx7688)
-		return -ENOMEM;
+	anx7688 = devm_drm_bridge_alloc(dev, struct cros_ec_anx7688, bridge,
+					&cros_ec_anx7688_bridge_funcs);
+	if (IS_ERR(anx7688))
+		return PTR_ERR(anx7688);
 
 	anx7688->client = client;
 	i2c_set_clientdata(client, anx7688);
@@ -153,7 +154,6 @@ static int cros_ec_anx7688_bridge_probe(struct i2c_client *client)
 		DRM_WARN("Old ANX7688 FW version (0x%04x), not filtering\n",
 			 fw_version);
 
-	anx7688->bridge.funcs = &cros_ec_anx7688_bridge_funcs;
 	drm_bridge_add(&anx7688->bridge);
 
 	return 0;
diff --git a/drivers/gpu/drm/bridge/fsl-ldb.c b/drivers/gpu/drm/bridge/fsl-ldb.c
index 2cb6dfc7a6d3..5c3cf37200bc 100644
--- a/drivers/gpu/drm/bridge/fsl-ldb.c
+++ b/drivers/gpu/drm/bridge/fsl-ldb.c
@@ -298,16 +298,15 @@ static int fsl_ldb_probe(struct platform_device *pdev)
 	struct fsl_ldb *fsl_ldb;
 	int dual_link;
 
-	fsl_ldb = devm_kzalloc(dev, sizeof(*fsl_ldb), GFP_KERNEL);
-	if (!fsl_ldb)
-		return -ENOMEM;
+	fsl_ldb = devm_drm_bridge_alloc(dev, struct fsl_ldb, bridge, &funcs);
+	if (IS_ERR(fsl_ldb))
+		return PTR_ERR(fsl_ldb);
 
 	fsl_ldb->devdata = of_device_get_match_data(dev);
 	if (!fsl_ldb->devdata)
 		return -EINVAL;
 
 	fsl_ldb->dev = &pdev->dev;
-	fsl_ldb->bridge.funcs = &funcs;
 	fsl_ldb->bridge.of_node = dev->of_node;
 
 	fsl_ldb->clk = devm_clk_get(dev, "ldb");
diff --git a/drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c b/drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c
index f072c6ed39ef..989bc497b050 100644
--- a/drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c
+++ b/drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c
@@ -59,9 +59,10 @@ struct drm_bridge *devm_imx_drm_legacy_bridge(struct device *dev,
 	struct imx_legacy_bridge *imx_bridge;
 	int ret;
 
-	imx_bridge = devm_kzalloc(dev, sizeof(*imx_bridge), GFP_KERNEL);
-	if (!imx_bridge)
-		return ERR_PTR(-ENOMEM);
+	imx_bridge = devm_drm_bridge_alloc(dev, struct imx_legacy_bridge,
+					   base, &imx_legacy_bridge_funcs);
+	if (IS_ERR(imx_bridge))
+		return ERR_CAST(imx_bridge);
 
 	ret = of_get_drm_display_mode(np,
 				      &imx_bridge->mode,
@@ -72,7 +73,6 @@ struct drm_bridge *devm_imx_drm_legacy_bridge(struct device *dev,
 
 	imx_bridge->mode.type |= DRM_MODE_TYPE_DRIVER;
 
-	imx_bridge->base.funcs = &imx_legacy_bridge_funcs;
 	imx_bridge->base.of_node = np;
 	imx_bridge->base.ops = DRM_BRIDGE_OP_MODES;
 	imx_bridge->base.type = type;
diff --git a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c
index 8a4fd7d77a8d..3a6f8587a257 100644
--- a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c
+++ b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c
@@ -140,9 +140,10 @@ static int imx8mp_hdmi_pvi_probe(struct platform_device *pdev)
 	struct device_node *remote;
 	struct imx8mp_hdmi_pvi *pvi;
 
-	pvi = devm_kzalloc(&pdev->dev, sizeof(*pvi), GFP_KERNEL);
-	if (!pvi)
-		return -ENOMEM;
+	pvi = devm_drm_bridge_alloc(&pdev->dev, struct imx8mp_hdmi_pvi,
+				    bridge, &imx_hdmi_pvi_bridge_funcs);
+	if (IS_ERR(pvi))
+		return PTR_ERR(pvi);
 
 	platform_set_drvdata(pdev, pvi);
 	pvi->dev = &pdev->dev;
@@ -166,7 +167,6 @@ static int imx8mp_hdmi_pvi_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 
 	/* Register the bridge. */
-	pvi->bridge.funcs = &imx_hdmi_pvi_bridge_funcs;
 	pvi->bridge.of_node = pdev->dev.of_node;
 	pvi->bridge.timings = pvi->next_bridge->timings;
 
diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
index e092c9ea99b0..e5943506981d 100644
--- a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
+++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
@@ -327,9 +327,10 @@ static int imx8qxp_pixel_link_bridge_probe(struct platform_device *pdev)
 	struct device_node *np = dev->of_node;
 	int ret;
 
-	pl = devm_kzalloc(dev, sizeof(*pl), GFP_KERNEL);
-	if (!pl)
-		return -ENOMEM;
+	pl = devm_drm_bridge_alloc(dev, struct imx8qxp_pixel_link, bridge,
+				   &imx8qxp_pixel_link_bridge_funcs);
+	if (IS_ERR(pl))
+		return PTR_ERR(pl);
 
 	ret = imx_scu_get_handle(&pl->ipc_handle);
 	if (ret) {
@@ -384,7 +385,6 @@ static int imx8qxp_pixel_link_bridge_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, pl);
 
 	pl->bridge.driver_private = pl;
-	pl->bridge.funcs = &imx8qxp_pixel_link_bridge_funcs;
 	pl->bridge.of_node = np;
 
 	drm_bridge_add(&pl->bridge);
diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c b/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
index da138ab51b3b..111310acab2c 100644
--- a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
+++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
@@ -392,9 +392,10 @@ static int imx8qxp_pxl2dpi_bridge_probe(struct platform_device *pdev)
 	struct device_node *np = dev->of_node;
 	int ret;
 
-	p2d = devm_kzalloc(dev, sizeof(*p2d), GFP_KERNEL);
-	if (!p2d)
-		return -ENOMEM;
+	p2d = devm_drm_bridge_alloc(dev, struct imx8qxp_pxl2dpi, bridge,
+				    &imx8qxp_pxl2dpi_bridge_funcs);
+	if (IS_ERR(p2d))
+		return PTR_ERR(p2d);
 
 	p2d->regmap = syscon_node_to_regmap(np->parent);
 	if (IS_ERR(p2d->regmap)) {
@@ -441,7 +442,6 @@ static int imx8qxp_pxl2dpi_bridge_probe(struct platform_device *pdev)
 	pm_runtime_enable(dev);
 
 	p2d->bridge.driver_private = p2d;
-	p2d->bridge.funcs = &imx8qxp_pxl2dpi_bridge_funcs;
 	p2d->bridge.of_node = np;
 
 	drm_bridge_add(&p2d->bridge);
diff --git a/drivers/gpu/drm/bridge/ite-it6263.c b/drivers/gpu/drm/bridge/ite-it6263.c
index a3a63a977b0a..c4eedf643f39 100644
--- a/drivers/gpu/drm/bridge/ite-it6263.c
+++ b/drivers/gpu/drm/bridge/ite-it6263.c
@@ -816,9 +816,10 @@ static int it6263_probe(struct i2c_client *client)
 	struct it6263 *it;
 	int ret;
 
-	it = devm_kzalloc(dev, sizeof(*it), GFP_KERNEL);
-	if (!it)
-		return -ENOMEM;
+	it = devm_drm_bridge_alloc(dev, struct it6263, bridge,
+				   &it6263_bridge_funcs);
+	if (IS_ERR(it))
+		return PTR_ERR(it);
 
 	it->dev = dev;
 	it->hdmi_i2c = client;
@@ -866,7 +867,6 @@ static int it6263_probe(struct i2c_client *client)
 
 	i2c_set_clientdata(client, it);
 
-	it->bridge.funcs = &it6263_bridge_funcs;
 	it->bridge.of_node = dev->of_node;
 	/* IT6263 chip doesn't support HPD interrupt. */
 	it->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
index 1383d1e21afe..b0dc9280d870 100644
--- a/drivers/gpu/drm/bridge/ite-it6505.c
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -3583,9 +3583,10 @@ static int it6505_i2c_probe(struct i2c_client *client)
 	struct extcon_dev *extcon;
 	int err;
 
-	it6505 = devm_kzalloc(&client->dev, sizeof(*it6505), GFP_KERNEL);
-	if (!it6505)
-		return -ENOMEM;
+	it6505 = devm_drm_bridge_alloc(&client->dev, struct it6505, bridge,
+				       &it6505_bridge_funcs);
+	if (IS_ERR(it6505))
+		return PTR_ERR(it6505);
 
 	mutex_init(&it6505->extcon_lock);
 	mutex_init(&it6505->mode_lock);
@@ -3660,7 +3661,6 @@ static int it6505_i2c_probe(struct i2c_client *client)
 	it6505->aux.transfer = it6505_aux_transfer;
 	drm_dp_aux_init(&it6505->aux);
 
-	it6505->bridge.funcs = &it6505_bridge_funcs;
 	it6505->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
 	it6505->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
 			     DRM_BRIDGE_OP_HPD;
diff --git a/drivers/gpu/drm/bridge/ite-it66121.c b/drivers/gpu/drm/bridge/ite-it66121.c
index 7b110ae53291..6494f0842793 100644
--- a/drivers/gpu/drm/bridge/ite-it66121.c
+++ b/drivers/gpu/drm/bridge/ite-it66121.c
@@ -1516,9 +1516,10 @@ static int it66121_probe(struct i2c_client *client)
 		return -ENXIO;
 	}
 
-	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
+	ctx = devm_drm_bridge_alloc(dev, struct it66121_ctx, bridge,
+				    &it66121_bridge_funcs);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	ep = of_graph_get_endpoint_by_regs(dev->of_node, 0, 0);
 	if (!ep)
@@ -1577,7 +1578,6 @@ static int it66121_probe(struct i2c_client *client)
 		return -ENODEV;
 	}
 
-	ctx->bridge.funcs = &it66121_bridge_funcs;
 	ctx->bridge.of_node = dev->of_node;
 	ctx->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
 	ctx->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID;
diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c
index 3e49d855b364..bd83228b0f0e 100644
--- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
+++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
@@ -761,9 +761,10 @@ static int lt8912_probe(struct i2c_client *client)
 	int ret = 0;
 	struct device *dev = &client->dev;
 
-	lt = devm_kzalloc(dev, sizeof(struct lt8912), GFP_KERNEL);
-	if (!lt)
-		return -ENOMEM;
+	lt = devm_drm_bridge_alloc(dev, struct lt8912, bridge,
+				   &lt8912_bridge_funcs);
+	if (IS_ERR(lt))
+		return PTR_ERR(lt);
 
 	lt->dev = dev;
 	lt->i2c_client[0] = client;
@@ -778,7 +779,6 @@ static int lt8912_probe(struct i2c_client *client)
 
 	i2c_set_clientdata(client, lt);
 
-	lt->bridge.funcs = &lt8912_bridge_funcs;
 	lt->bridge.of_node = dev->of_node;
 	lt->bridge.ops = (DRM_BRIDGE_OP_EDID |
 			  DRM_BRIDGE_OP_DETECT);
diff --git a/drivers/gpu/drm/bridge/lontium-lt9211.c b/drivers/gpu/drm/bridge/lontium-lt9211.c
index 9b2dac9bd63c..399fa7eebd49 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9211.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9211.c
@@ -727,9 +727,9 @@ static int lt9211_probe(struct i2c_client *client)
 	struct lt9211 *ctx;
 	int ret;
 
-	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
+	ctx = devm_drm_bridge_alloc(dev, struct lt9211, bridge, &lt9211_funcs);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	ctx->dev = dev;
 
@@ -755,7 +755,6 @@ static int lt9211_probe(struct i2c_client *client)
 	dev_set_drvdata(dev, ctx);
 	i2c_set_clientdata(client, ctx);
 
-	ctx->bridge.funcs = &lt9211_funcs;
 	ctx->bridge.of_node = dev->of_node;
 	drm_bridge_add(&ctx->bridge);
 
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index a35a8b8ca89c..d6ee79c1e427 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -1072,9 +1072,10 @@ static int lt9611_probe(struct i2c_client *client)
 		return -ENODEV;
 	}
 
-	lt9611 = devm_kzalloc(dev, sizeof(*lt9611), GFP_KERNEL);
-	if (!lt9611)
-		return -ENOMEM;
+	lt9611 = devm_drm_bridge_alloc(dev, struct lt9611, bridge,
+				       &lt9611_bridge_funcs);
+	if (IS_ERR(lt9611))
+		return PTR_ERR(lt9611);
 
 	lt9611->dev = dev;
 	lt9611->client = client;
@@ -1127,7 +1128,6 @@ static int lt9611_probe(struct i2c_client *client)
 	/* Disable Audio InfoFrame, enabled by default */
 	regmap_update_bits(lt9611->regmap, 0x843d, LT9611_INFOFRAME_AUDIO, 0);
 
-	lt9611->bridge.funcs = &lt9611_bridge_funcs;
 	lt9611->bridge.of_node = client->dev.of_node;
 	lt9611->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
 			     DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_MODES |
diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c
index 1646e454e0b0..e6a7147e141b 100644
--- a/drivers/gpu/drm/bridge/lvds-codec.c
+++ b/drivers/gpu/drm/bridge/lvds-codec.c
@@ -118,9 +118,10 @@ static int lvds_codec_probe(struct platform_device *pdev)
 	u32 val;
 	int ret;
 
-	lvds_codec = devm_kzalloc(dev, sizeof(*lvds_codec), GFP_KERNEL);
-	if (!lvds_codec)
-		return -ENOMEM;
+	lvds_codec = devm_drm_bridge_alloc(dev, struct lvds_codec, bridge,
+					   &funcs);
+	if (IS_ERR(lvds_codec))
+		return PTR_ERR(lvds_codec);
 
 	lvds_codec->dev = &pdev->dev;
 	lvds_codec->connector_type = (uintptr_t)of_device_get_match_data(dev);
@@ -156,8 +157,6 @@ static int lvds_codec_probe(struct platform_device *pdev)
 	if (IS_ERR(lvds_codec->panel_bridge))
 		return PTR_ERR(lvds_codec->panel_bridge);
 
-	lvds_codec->bridge.funcs = &funcs;
-
 	/*
 	 * Decoder input LVDS format is a property of the decoder chip or even
 	 * its strapping. Handle data-mapping the same way lvds-panel does. In
diff --git a/drivers/gpu/drm/bridge/microchip-lvds.c b/drivers/gpu/drm/bridge/microchip-lvds.c
index 1d4ae0097df8..9f4ff82bc6b4 100644
--- a/drivers/gpu/drm/bridge/microchip-lvds.c
+++ b/drivers/gpu/drm/bridge/microchip-lvds.c
@@ -157,9 +157,10 @@ static int mchp_lvds_probe(struct platform_device *pdev)
 	if (!dev->of_node)
 		return -ENODEV;
 
-	lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);
-	if (!lvds)
-		return -ENOMEM;
+	lvds = devm_drm_bridge_alloc(&pdev->dev, struct mchp_lvds, bridge,
+				     &mchp_lvds_bridge_funcs);
+	if (IS_ERR(lvds))
+		return PTR_ERR(lvds);
 
 	lvds->dev = dev;
 
@@ -192,7 +193,6 @@ static int mchp_lvds_probe(struct platform_device *pdev)
 
 	lvds->bridge.of_node = dev->of_node;
 	lvds->bridge.type = DRM_MODE_CONNECTOR_LVDS;
-	lvds->bridge.funcs = &mchp_lvds_bridge_funcs;
 
 	dev_set_drvdata(dev, lvds);
 	ret = devm_pm_runtime_enable(dev);
diff --git a/drivers/gpu/drm/bridge/nwl-dsi.c b/drivers/gpu/drm/bridge/nwl-dsi.c
index 55912ae11f46..2f7429b24fc2 100644
--- a/drivers/gpu/drm/bridge/nwl-dsi.c
+++ b/drivers/gpu/drm/bridge/nwl-dsi.c
@@ -1149,9 +1149,10 @@ static int nwl_dsi_probe(struct platform_device *pdev)
 	struct nwl_dsi *dsi;
 	int ret;
 
-	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
-	if (!dsi)
-		return -ENOMEM;
+	dsi = devm_drm_bridge_alloc(dev, struct nwl_dsi, bridge,
+				    &nwl_dsi_bridge_funcs);
+	if (IS_ERR(dsi))
+		return PTR_ERR(dsi);
 
 	dsi->dev = dev;
 
@@ -1180,7 +1181,6 @@ static int nwl_dsi_probe(struct platform_device *pdev)
 		dsi->quirks = (uintptr_t)attr->data;
 
 	dsi->bridge.driver_private = dsi;
-	dsi->bridge.funcs = &nwl_dsi_bridge_funcs;
 	dsi->bridge.of_node = dev->of_node;
 	dsi->bridge.timings = &nwl_dsi_timings;
 	dsi->bridge.type = DRM_MODE_CONNECTOR_DSI;
diff --git a/drivers/gpu/drm/bridge/parade-ps8622.c b/drivers/gpu/drm/bridge/parade-ps8622.c
index 8726fefc5c65..f879a1df077d 100644
--- a/drivers/gpu/drm/bridge/parade-ps8622.c
+++ b/drivers/gpu/drm/bridge/parade-ps8622.c
@@ -449,9 +449,10 @@ static int ps8622_probe(struct i2c_client *client)
 	struct drm_bridge *panel_bridge;
 	int ret;
 
-	ps8622 = devm_kzalloc(dev, sizeof(*ps8622), GFP_KERNEL);
-	if (!ps8622)
-		return -ENOMEM;
+	ps8622 = devm_drm_bridge_alloc(dev, struct ps8622_bridge, bridge,
+				       &ps8622_bridge_funcs);
+	if (IS_ERR(ps8622))
+		return PTR_ERR(ps8622);
 
 	panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0);
 	if (IS_ERR(panel_bridge))
@@ -509,7 +510,6 @@ static int ps8622_probe(struct i2c_client *client)
 		ps8622->bl->props.brightness = PS8622_MAX_BRIGHTNESS;
 	}
 
-	ps8622->bridge.funcs = &ps8622_bridge_funcs;
 	ps8622->bridge.type = DRM_MODE_CONNECTOR_LVDS;
 	ps8622->bridge.of_node = dev->of_node;
 	drm_bridge_add(&ps8622->bridge);
diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c
index 2422ff68c104..825777a5758f 100644
--- a/drivers/gpu/drm/bridge/parade-ps8640.c
+++ b/drivers/gpu/drm/bridge/parade-ps8640.c
@@ -636,9 +636,10 @@ static int ps8640_probe(struct i2c_client *client)
 	int ret;
 	u32 i;
 
-	ps_bridge = devm_kzalloc(dev, sizeof(*ps_bridge), GFP_KERNEL);
-	if (!ps_bridge)
-		return -ENOMEM;
+	ps_bridge = devm_drm_bridge_alloc(dev, struct ps8640, bridge,
+					  &ps8640_bridge_funcs);
+	if (IS_ERR(ps_bridge))
+		return PTR_ERR(ps_bridge);
 
 	mutex_init(&ps_bridge->aux_lock);
 
@@ -662,7 +663,6 @@ static int ps8640_probe(struct i2c_client *client)
 	if (IS_ERR(ps_bridge->gpio_reset))
 		return PTR_ERR(ps_bridge->gpio_reset);
 
-	ps_bridge->bridge.funcs = &ps8640_bridge_funcs;
 	ps_bridge->bridge.of_node = dev->of_node;
 	ps_bridge->bridge.type = DRM_MODE_CONNECTOR_eDP;
 
diff --git a/drivers/gpu/drm/bridge/sii9234.c b/drivers/gpu/drm/bridge/sii9234.c
index cd7837c9a6e0..bb1bed03eb5b 100644
--- a/drivers/gpu/drm/bridge/sii9234.c
+++ b/drivers/gpu/drm/bridge/sii9234.c
@@ -888,9 +888,10 @@ static int sii9234_probe(struct i2c_client *client)
 	struct device *dev = &client->dev;
 	int ret;
 
-	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
+	ctx = devm_drm_bridge_alloc(dev, struct sii9234, bridge,
+				    &sii9234_bridge_funcs);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	ctx->dev = dev;
 	mutex_init(&ctx->lock);
@@ -921,7 +922,6 @@ static int sii9234_probe(struct i2c_client *client)
 
 	i2c_set_clientdata(client, ctx);
 
-	ctx->bridge.funcs = &sii9234_bridge_funcs;
 	ctx->bridge.of_node = dev->of_node;
 	drm_bridge_add(&ctx->bridge);
 
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c
index 3af650dc92a1..9e48ad39e1cc 100644
--- a/drivers/gpu/drm/bridge/sil-sii8620.c
+++ b/drivers/gpu/drm/bridge/sil-sii8620.c
@@ -2291,9 +2291,10 @@ static int sii8620_probe(struct i2c_client *client)
 	struct sii8620 *ctx;
 	int ret;
 
-	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
+	ctx = devm_drm_bridge_alloc(dev, struct sii8620, bridge,
+				    &sii8620_bridge_funcs);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	ctx->dev = dev;
 	mutex_init(&ctx->lock);
@@ -2336,7 +2337,6 @@ static int sii8620_probe(struct i2c_client *client)
 
 	i2c_set_clientdata(client, ctx);
 
-	ctx->bridge.funcs = &sii8620_bridge_funcs;
 	ctx->bridge.of_node = dev->of_node;
 	drm_bridge_add(&ctx->bridge);
 
diff --git a/drivers/gpu/drm/bridge/simple-bridge.c b/drivers/gpu/drm/bridge/simple-bridge.c
index 70db5b99e5bb..c66bd913e33a 100644
--- a/drivers/gpu/drm/bridge/simple-bridge.c
+++ b/drivers/gpu/drm/bridge/simple-bridge.c
@@ -168,9 +168,10 @@ static int simple_bridge_probe(struct platform_device *pdev)
 	struct simple_bridge *sbridge;
 	struct device_node *remote;
 
-	sbridge = devm_kzalloc(&pdev->dev, sizeof(*sbridge), GFP_KERNEL);
-	if (!sbridge)
-		return -ENOMEM;
+	sbridge = devm_drm_bridge_alloc(&pdev->dev, struct simple_bridge,
+					bridge, &simple_bridge_bridge_funcs);
+	if (IS_ERR(sbridge))
+		return PTR_ERR(sbridge);
 
 	sbridge->info = of_device_get_match_data(&pdev->dev);
 
@@ -204,7 +205,6 @@ static int simple_bridge_probe(struct platform_device *pdev)
 				     "Unable to retrieve enable GPIO\n");
 
 	/* Register the bridge. */
-	sbridge->bridge.funcs = &simple_bridge_bridge_funcs;
 	sbridge->bridge.of_node = pdev->dev.of_node;
 	sbridge->bridge.timings = sbridge->info->timings;
 
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
index 5e5f8c2f95be..94dddaf49b3c 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
@@ -1045,9 +1045,10 @@ struct dw_hdmi_qp *dw_hdmi_qp_bind(struct platform_device *pdev,
 		return ERR_PTR(-ENODEV);
 	}
 
-	hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
-	if (!hdmi)
-		return ERR_PTR(-ENOMEM);
+	hdmi = devm_drm_bridge_alloc(dev, struct dw_hdmi_qp, bridge,
+				     &dw_hdmi_qp_bridge_funcs);
+	if (IS_ERR(hdmi))
+		return ERR_CAST(hdmi);
 
 	hdmi->dev = dev;
 
@@ -1073,7 +1074,6 @@ struct dw_hdmi_qp *dw_hdmi_qp_bind(struct platform_device *pdev,
 		return ERR_PTR(ret);
 
 	hdmi->bridge.driver_private = hdmi;
-	hdmi->bridge.funcs = &dw_hdmi_qp_bridge_funcs;
 	hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT |
 			   DRM_BRIDGE_OP_EDID |
 			   DRM_BRIDGE_OP_HDMI |
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index b08ada920a50..c0dc0f2976b9 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -1194,9 +1194,10 @@ __dw_mipi_dsi_probe(struct platform_device *pdev,
 	struct dw_mipi_dsi *dsi;
 	int ret;
 
-	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
-	if (!dsi)
-		return ERR_PTR(-ENOMEM);
+	dsi = devm_drm_bridge_alloc(dev, struct dw_mipi_dsi, bridge,
+				    &dw_mipi_dsi_bridge_funcs);
+	if (IS_ERR(dsi))
+		return ERR_CAST(dsi);
 
 	dsi->dev = dev;
 	dsi->plat_data = plat_data;
@@ -1265,7 +1266,6 @@ __dw_mipi_dsi_probe(struct platform_device *pdev,
 	}
 
 	dsi->bridge.driver_private = dsi;
-	dsi->bridge.funcs = &dw_mipi_dsi_bridge_funcs;
 	dsi->bridge.of_node = pdev->dev.of_node;
 
 	return dsi;
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c
index c76f5f2e74d1..fc91aca95d12 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c
@@ -914,9 +914,10 @@ __dw_mipi_dsi2_probe(struct platform_device *pdev,
 	struct dw_mipi_dsi2 *dsi2;
 	int ret;
 
-	dsi2 = devm_kzalloc(dev, sizeof(*dsi2), GFP_KERNEL);
-	if (!dsi2)
-		return ERR_PTR(-ENOMEM);
+	dsi2 = devm_drm_bridge_alloc(dev, struct dw_mipi_dsi2, bridge,
+				     &dw_mipi_dsi2_bridge_funcs);
+	if (IS_ERR(dsi2))
+		return ERR_CAST(dsi2);
 
 	dsi2->dev = dev;
 	dsi2->plat_data = plat_data;
@@ -981,7 +982,6 @@ __dw_mipi_dsi2_probe(struct platform_device *pdev,
 	}
 
 	dsi2->bridge.driver_private = dsi2;
-	dsi2->bridge.funcs = &dw_mipi_dsi2_bridge_funcs;
 	dsi2->bridge.of_node = pdev->dev.of_node;
 
 	return dsi2;
diff --git a/drivers/gpu/drm/bridge/tc358762.c b/drivers/gpu/drm/bridge/tc358762.c
index edf01476f2ef..98df3e667d4a 100644
--- a/drivers/gpu/drm/bridge/tc358762.c
+++ b/drivers/gpu/drm/bridge/tc358762.c
@@ -265,9 +265,10 @@ static int tc358762_probe(struct mipi_dsi_device *dsi)
 	struct tc358762 *ctx;
 	int ret;
 
-	ctx = devm_kzalloc(dev, sizeof(struct tc358762), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
+	ctx = devm_drm_bridge_alloc(dev, struct tc358762, bridge,
+				    &tc358762_bridge_funcs);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	mipi_dsi_set_drvdata(dsi, ctx);
 
@@ -288,7 +289,6 @@ static int tc358762_probe(struct mipi_dsi_device *dsi)
 	if (ret < 0)
 		return ret;
 
-	ctx->bridge.funcs = &tc358762_bridge_funcs;
 	ctx->bridge.type = DRM_MODE_CONNECTOR_DPI;
 	ctx->bridge.of_node = dev->of_node;
 	ctx->bridge.pre_enable_prev_first = true;
diff --git a/drivers/gpu/drm/bridge/tc358764.c b/drivers/gpu/drm/bridge/tc358764.c
index 3f76c890fad9..084e9d898e22 100644
--- a/drivers/gpu/drm/bridge/tc358764.c
+++ b/drivers/gpu/drm/bridge/tc358764.c
@@ -347,9 +347,10 @@ static int tc358764_probe(struct mipi_dsi_device *dsi)
 	struct tc358764 *ctx;
 	int ret;
 
-	ctx = devm_kzalloc(dev, sizeof(struct tc358764), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
+	ctx = devm_drm_bridge_alloc(dev, struct tc358764, bridge,
+				    &tc358764_bridge_funcs);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	mipi_dsi_set_drvdata(dsi, ctx);
 
@@ -368,7 +369,6 @@ static int tc358764_probe(struct mipi_dsi_device *dsi)
 	if (ret < 0)
 		return ret;
 
-	ctx->bridge.funcs = &tc358764_bridge_funcs;
 	ctx->bridge.of_node = dev->of_node;
 	ctx->bridge.pre_enable_prev_first = true;
 
diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c
index 063f217a17b6..fbdc44e16229 100644
--- a/drivers/gpu/drm/bridge/tc358768.c
+++ b/drivers/gpu/drm/bridge/tc358768.c
@@ -1287,9 +1287,10 @@ static int tc358768_i2c_probe(struct i2c_client *client)
 	if (!np)
 		return -ENODEV;
 
-	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
+	priv = devm_drm_bridge_alloc(dev, struct tc358768_priv, bridge,
+				     &tc358768_bridge_funcs);
+	if (IS_ERR(priv))
+		return PTR_ERR(priv);
 
 	dev_set_drvdata(dev, priv);
 	priv->dev = dev;
@@ -1321,7 +1322,6 @@ static int tc358768_i2c_probe(struct i2c_client *client)
 	priv->dsi_host.dev = dev;
 	priv->dsi_host.ops = &tc358768_dsi_host_ops;
 
-	priv->bridge.funcs = &tc358768_bridge_funcs;
 	priv->bridge.timings = &default_tc358768_timings;
 	priv->bridge.of_node = np;
 
diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
index 1b10e6ee1724..366b12db0e7c 100644
--- a/drivers/gpu/drm/bridge/tc358775.c
+++ b/drivers/gpu/drm/bridge/tc358775.c
@@ -659,9 +659,10 @@ static int tc_probe(struct i2c_client *client)
 	struct tc_data *tc;
 	int ret;
 
-	tc = devm_kzalloc(dev, sizeof(*tc), GFP_KERNEL);
-	if (!tc)
-		return -ENOMEM;
+	tc = devm_drm_bridge_alloc(dev, struct tc_data, bridge,
+				   &tc_bridge_funcs);
+	if (IS_ERR(tc))
+		return PTR_ERR(tc);
 
 	tc->dev = dev;
 	tc->i2c = client;
@@ -701,7 +702,6 @@ static int tc_probe(struct i2c_client *client)
 		return ret;
 	}
 
-	tc->bridge.funcs = &tc_bridge_funcs;
 	tc->bridge.of_node = dev->of_node;
 	tc->bridge.pre_enable_prev_first = true;
 	drm_bridge_add(&tc->bridge);
diff --git a/drivers/gpu/drm/bridge/thc63lvd1024.c b/drivers/gpu/drm/bridge/thc63lvd1024.c
index e2fc78adebcf..2cb7cd0c0608 100644
--- a/drivers/gpu/drm/bridge/thc63lvd1024.c
+++ b/drivers/gpu/drm/bridge/thc63lvd1024.c
@@ -181,9 +181,10 @@ static int thc63_probe(struct platform_device *pdev)
 	struct thc63_dev *thc63;
 	int ret;
 
-	thc63 = devm_kzalloc(&pdev->dev, sizeof(*thc63), GFP_KERNEL);
-	if (!thc63)
-		return -ENOMEM;
+	thc63 = devm_drm_bridge_alloc(&pdev->dev, struct thc63_dev, bridge,
+				      &thc63_bridge_func);
+	if (IS_ERR(thc63))
+		return PTR_ERR(thc63);
 
 	thc63->dev = &pdev->dev;
 	platform_set_drvdata(pdev, thc63);
@@ -208,7 +209,6 @@ static int thc63_probe(struct platform_device *pdev)
 
 	thc63->bridge.driver_private = thc63;
 	thc63->bridge.of_node = pdev->dev.of_node;
-	thc63->bridge.funcs = &thc63_bridge_func;
 	thc63->bridge.timings = &thc63->timings;
 
 	drm_bridge_add(&thc63->bridge);
diff --git a/drivers/gpu/drm/bridge/ti-dlpc3433.c b/drivers/gpu/drm/bridge/ti-dlpc3433.c
index 47638d1c96ec..b07f7c9d5890 100644
--- a/drivers/gpu/drm/bridge/ti-dlpc3433.c
+++ b/drivers/gpu/drm/bridge/ti-dlpc3433.c
@@ -348,9 +348,10 @@ static int dlpc3433_probe(struct i2c_client *client)
 	struct dlpc *dlpc;
 	int ret;
 
-	dlpc = devm_kzalloc(dev, sizeof(*dlpc), GFP_KERNEL);
-	if (!dlpc)
-		return -ENOMEM;
+	dlpc = devm_drm_bridge_alloc(dev, struct dlpc, bridge,
+				     &dlpc_bridge_funcs);
+	if (IS_ERR(dlpc))
+		return PTR_ERR(dlpc);
 
 	dlpc->dev = dev;
 
@@ -365,7 +366,6 @@ static int dlpc3433_probe(struct i2c_client *client)
 	dev_set_drvdata(dev, dlpc);
 	i2c_set_clientdata(client, dlpc);
 
-	dlpc->bridge.funcs = &dlpc_bridge_funcs;
 	dlpc->bridge.of_node = dev->of_node;
 	drm_bridge_add(&dlpc->bridge);
 
diff --git a/drivers/gpu/drm/bridge/ti-tdp158.c b/drivers/gpu/drm/bridge/ti-tdp158.c
index cca75443f012..27053d020df7 100644
--- a/drivers/gpu/drm/bridge/ti-tdp158.c
+++ b/drivers/gpu/drm/bridge/ti-tdp158.c
@@ -68,9 +68,10 @@ static int tdp158_probe(struct i2c_client *client)
 	struct tdp158 *tdp158;
 	struct device *dev = &client->dev;
 
-	tdp158 = devm_kzalloc(dev, sizeof(*tdp158), GFP_KERNEL);
-	if (!tdp158)
-		return -ENOMEM;
+	tdp158 = devm_drm_bridge_alloc(dev, struct tdp158, bridge,
+				       &tdp158_bridge_funcs);
+	if (IS_ERR(tdp158))
+		return PTR_ERR(tdp158);
 
 	tdp158->next = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
 	if (IS_ERR(tdp158->next))
@@ -89,7 +90,6 @@ static int tdp158_probe(struct i2c_client *client)
 		return dev_err_probe(dev, PTR_ERR(tdp158->enable), "enable");
 
 	tdp158->bridge.of_node = dev->of_node;
-	tdp158->bridge.funcs = &tdp158_bridge_funcs;
 	tdp158->bridge.driver_private = tdp158;
 	tdp158->dev = dev;
 
diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index e15d232ddbac..549e8e8edeb4 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -341,14 +341,14 @@ static int tfp410_init(struct device *dev, bool i2c)
 		return -ENXIO;
 	}
 
-	dvi = devm_kzalloc(dev, sizeof(*dvi), GFP_KERNEL);
-	if (!dvi)
-		return -ENOMEM;
+	dvi = devm_drm_bridge_alloc(dev, struct tfp410, bridge,
+				    &tfp410_bridge_funcs);
+	if (IS_ERR(dvi))
+		return PTR_ERR(dvi);
 
 	dvi->dev = dev;
 	dev_set_drvdata(dev, dvi);
 
-	dvi->bridge.funcs = &tfp410_bridge_funcs;
 	dvi->bridge.of_node = dev->of_node;
 	dvi->bridge.timings = &dvi->timings;
 	dvi->bridge.type = DRM_MODE_CONNECTOR_DVID;
diff --git a/drivers/gpu/drm/bridge/ti-tpd12s015.c b/drivers/gpu/drm/bridge/ti-tpd12s015.c
index 1c289051a598..0919364e80d1 100644
--- a/drivers/gpu/drm/bridge/ti-tpd12s015.c
+++ b/drivers/gpu/drm/bridge/ti-tpd12s015.c
@@ -116,13 +116,13 @@ static int tpd12s015_probe(struct platform_device *pdev)
 	struct gpio_desc *gpio;
 	int ret;
 
-	tpd = devm_kzalloc(&pdev->dev, sizeof(*tpd), GFP_KERNEL);
-	if (!tpd)
-		return -ENOMEM;
+	tpd = devm_drm_bridge_alloc(&pdev->dev, struct tpd12s015_device,
+				    bridge, &tpd12s015_bridge_funcs);
+	if (IS_ERR(tpd))
+		return PTR_ERR(tpd);
 
 	platform_set_drvdata(pdev, tpd);
 
-	tpd->bridge.funcs = &tpd12s015_bridge_funcs;
 	tpd->bridge.of_node = pdev->dev.of_node;
 	tpd->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
 	tpd->bridge.ops = DRM_BRIDGE_OP_DETECT;
diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
index b2408abb9d49..bb80686a70e1 100644
--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -2725,9 +2725,10 @@ static int mtk_dp_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	int ret;
 
-	mtk_dp = devm_kzalloc(dev, sizeof(*mtk_dp), GFP_KERNEL);
-	if (!mtk_dp)
-		return -ENOMEM;
+	mtk_dp = devm_drm_bridge_alloc(dev, struct mtk_dp, bridge,
+				       &mtk_dp_bridge_funcs);
+	if (IS_ERR(mtk_dp))
+		return PTR_ERR(mtk_dp);
 
 	mtk_dp->dev = dev;
 	mtk_dp->data = (struct mtk_dp_data *)of_device_get_match_data(dev);
@@ -2785,7 +2786,6 @@ static int mtk_dp_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	mtk_dp->bridge.funcs = &mtk_dp_bridge_funcs;
 	mtk_dp->bridge.of_node = dev->of_node;
 	mtk_dp->bridge.type = mtk_dp->data->bridge_type;
 
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 0f3b1ef8e497..9669bf4b80a1 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -1179,9 +1179,10 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 	struct mtk_dpi *dpi;
 	int ret;
 
-	dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
-	if (!dpi)
-		return -ENOMEM;
+	dpi = devm_drm_bridge_alloc(dev, struct mtk_dpi, bridge,
+				    &mtk_dpi_bridge_funcs);
+	if (IS_ERR(dpi))
+		return PTR_ERR(dpi);
 
 	dpi->dev = dev;
 	dpi->conf = (struct mtk_dpi_conf *)of_device_get_match_data(dev);
@@ -1233,7 +1234,6 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, dpi);
 
-	dpi->bridge.funcs = &mtk_dpi_bridge_funcs;
 	dpi->bridge.of_node = dev->of_node;
 	dpi->bridge.type = DRM_MODE_CONNECTOR_DPI;
 
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 4fe1f38a3c4b..d7726091819c 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -1196,9 +1196,10 @@ static int mtk_dsi_probe(struct platform_device *pdev)
 	int irq_num;
 	int ret;
 
-	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
-	if (!dsi)
-		return -ENOMEM;
+	dsi = devm_drm_bridge_alloc(dev, struct mtk_dsi, bridge,
+				    &mtk_dsi_bridge_funcs);
+	if (IS_ERR(dsi))
+		return PTR_ERR(dsi);
 
 	dsi->driver_data = of_device_get_match_data(dev);
 
@@ -1246,7 +1247,6 @@ static int mtk_dsi_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, dsi);
 
-	dsi->bridge.funcs = &mtk_dsi_bridge_funcs;
 	dsi->bridge.of_node = dev->of_node;
 	dsi->bridge.type = DRM_MODE_CONNECTOR_DSI;
 
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index c9d0c335c519..76aecad116ba 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1690,9 +1690,10 @@ static int mtk_hdmi_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	int ret;
 
-	hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
-	if (!hdmi)
-		return -ENOMEM;
+	hdmi = devm_drm_bridge_alloc(dev, struct mtk_hdmi, bridge,
+				     &mtk_hdmi_bridge_funcs);
+	if (IS_ERR(hdmi))
+		return PTR_ERR(hdmi);
 
 	hdmi->dev = dev;
 	hdmi->conf = of_device_get_match_data(dev);
@@ -1719,7 +1720,6 @@ static int mtk_hdmi_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, ret,
 				     "Failed to register audio driver\n");
 
-	hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
 	hdmi->bridge.of_node = pdev->dev.of_node;
 	hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
 			 | DRM_BRIDGE_OP_HPD;
diff --git a/drivers/gpu/drm/meson/meson_encoder_cvbs.c b/drivers/gpu/drm/meson/meson_encoder_cvbs.c
index c9678dc68fa1..dc374bfc5951 100644
--- a/drivers/gpu/drm/meson/meson_encoder_cvbs.c
+++ b/drivers/gpu/drm/meson/meson_encoder_cvbs.c
@@ -227,9 +227,12 @@ int meson_encoder_cvbs_probe(struct meson_drm *priv)
 	struct device_node *remote;
 	int ret;
 
-	meson_encoder_cvbs = devm_kzalloc(priv->dev, sizeof(*meson_encoder_cvbs), GFP_KERNEL);
-	if (!meson_encoder_cvbs)
-		return -ENOMEM;
+	meson_encoder_cvbs = devm_drm_bridge_alloc(priv->dev,
+						   struct meson_encoder_cvbs,
+						   bridge,
+						   &meson_encoder_cvbs_bridge_funcs);
+	if (IS_ERR(meson_encoder_cvbs))
+		return PTR_ERR(meson_encoder_cvbs);
 
 	/* CVBS Connector Bridge */
 	remote = of_graph_get_remote_node(priv->dev->of_node, 0, 0);
@@ -245,7 +248,6 @@ int meson_encoder_cvbs_probe(struct meson_drm *priv)
 				     "Failed to find CVBS Connector bridge\n");
 
 	/* CVBS Encoder Bridge */
-	meson_encoder_cvbs->bridge.funcs = &meson_encoder_cvbs_bridge_funcs;
 	meson_encoder_cvbs->bridge.of_node = priv->dev->of_node;
 	meson_encoder_cvbs->bridge.type = DRM_MODE_CONNECTOR_Composite;
 	meson_encoder_cvbs->bridge.ops = DRM_BRIDGE_OP_MODES;
diff --git a/drivers/gpu/drm/meson/meson_encoder_dsi.c b/drivers/gpu/drm/meson/meson_encoder_dsi.c
index 3db518e5f95d..6c6624f9ba24 100644
--- a/drivers/gpu/drm/meson/meson_encoder_dsi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_dsi.c
@@ -106,9 +106,12 @@ int meson_encoder_dsi_probe(struct meson_drm *priv)
 	struct device_node *remote;
 	int ret;
 
-	meson_encoder_dsi = devm_kzalloc(priv->dev, sizeof(*meson_encoder_dsi), GFP_KERNEL);
-	if (!meson_encoder_dsi)
-		return -ENOMEM;
+	meson_encoder_dsi = devm_drm_bridge_alloc(priv->dev,
+						  struct meson_encoder_dsi,
+						  bridge,
+						  &meson_encoder_dsi_bridge_funcs);
+	if (IS_ERR(meson_encoder_dsi))
+		return PTR_ERR(meson_encoder_dsi);
 
 	/* DSI Transceiver Bridge */
 	remote = of_graph_get_remote_node(priv->dev->of_node, 2, 0);
@@ -123,7 +126,6 @@ int meson_encoder_dsi_probe(struct meson_drm *priv)
 				     "Failed to find DSI transceiver bridge\n");
 
 	/* DSI Encoder Bridge */
-	meson_encoder_dsi->bridge.funcs = &meson_encoder_dsi_bridge_funcs;
 	meson_encoder_dsi->bridge.of_node = priv->dev->of_node;
 	meson_encoder_dsi->bridge.type = DRM_MODE_CONNECTOR_DSI;
 
diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
index 040c04b5dff9..5a0d37a257f5 100644
--- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
@@ -376,9 +376,12 @@ int meson_encoder_hdmi_probe(struct meson_drm *priv)
 	struct device_node *remote;
 	int ret;
 
-	meson_encoder_hdmi = devm_kzalloc(priv->dev, sizeof(*meson_encoder_hdmi), GFP_KERNEL);
-	if (!meson_encoder_hdmi)
-		return -ENOMEM;
+	meson_encoder_hdmi = devm_drm_bridge_alloc(priv->dev,
+						   struct meson_encoder_hdmi,
+						   bridge,
+						   &meson_encoder_hdmi_bridge_funcs);
+	if (IS_ERR(meson_encoder_hdmi))
+		return PTR_ERR(meson_encoder_hdmi);
 
 	/* HDMI Transceiver Bridge */
 	remote = of_graph_get_remote_node(priv->dev->of_node, 1, 0);
@@ -395,7 +398,6 @@ int meson_encoder_hdmi_probe(struct meson_drm *priv)
 	}
 
 	/* HDMI Encoder Bridge */
-	meson_encoder_hdmi->bridge.funcs = &meson_encoder_hdmi_bridge_funcs;
 	meson_encoder_hdmi->bridge.of_node = priv->dev->of_node;
 	meson_encoder_hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
 	meson_encoder_hdmi->bridge.interlace_allowed = true;
diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_lvds.c b/drivers/gpu/drm/renesas/rcar-du/rcar_lvds.c
index a9145253294f..af58b814e588 100644
--- a/drivers/gpu/drm/renesas/rcar-du/rcar_lvds.c
+++ b/drivers/gpu/drm/renesas/rcar-du/rcar_lvds.c
@@ -878,9 +878,10 @@ static int rcar_lvds_probe(struct platform_device *pdev)
 	struct rcar_lvds *lvds;
 	int ret;
 
-	lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);
-	if (lvds == NULL)
-		return -ENOMEM;
+	lvds = devm_drm_bridge_alloc(&pdev->dev, struct rcar_lvds, bridge,
+				     &rcar_lvds_bridge_ops);
+	if (IS_ERR(lvds))
+		return PTR_ERR(lvds);
 
 	platform_set_drvdata(pdev, lvds);
 
@@ -895,7 +896,6 @@ static int rcar_lvds_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return ret;
 
-	lvds->bridge.funcs = &rcar_lvds_bridge_ops;
 	lvds->bridge.of_node = pdev->dev.of_node;
 
 	lvds->mmio = devm_platform_ioremap_resource(pdev, 0);
diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
index dc6ab012cdb6..8ba0dde8d482 100644
--- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
+++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c
@@ -701,9 +701,10 @@ static int rzg2l_mipi_dsi_probe(struct platform_device *pdev)
 	u32 txsetr;
 	int ret;
 
-	dsi = devm_kzalloc(&pdev->dev, sizeof(*dsi), GFP_KERNEL);
-	if (!dsi)
-		return -ENOMEM;
+	dsi = devm_drm_bridge_alloc(&pdev->dev, struct rzg2l_mipi_dsi, bridge,
+				    &rzg2l_mipi_dsi_bridge_ops);
+	if (IS_ERR(dsi))
+		return PTR_ERR(dsi);
 
 	platform_set_drvdata(pdev, dsi);
 	dsi->dev = &pdev->dev;
@@ -761,7 +762,6 @@ static int rzg2l_mipi_dsi_probe(struct platform_device *pdev)
 	pm_runtime_put(dsi->dev);
 
 	/* Initialize the DRM bridge. */
-	dsi->bridge.funcs = &rzg2l_mipi_dsi_bridge_ops;
 	dsi->bridge.of_node = dsi->dev->of_node;
 
 	/* Init host device */