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 <[e-mail]> # microchip-lvds.c
Reviewed-by: Douglas Anderson <[e-mail]> # parade-ps8640
Tested-by: Douglas Anderson <[e-mail]> # parade-ps8640
Acked-by: Maxime Ripard <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
[Luca: fixed trivial patch conflict in adv7511_drv.c while applying]
Signed-off-by: Luca Ceresoli <[e-mail]>

drivers/gpu/drm/adp/adp-mipi.c

···
 {
 	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)) {
···
 
 	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);

drivers/gpu/drm/bridge/adv7511/adv7511_drv.c

···
 	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;
···
 	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 |

drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c

···
 	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;
 
···
 		DRM_ERROR("Failed to request INTP threaded IRQ: %d\n", err);
 		goto err_poweroff;
 	}
-
-	anx78xx->bridge.funcs = &anx78xx_bridge_funcs;
 
 	drm_bridge_add(&anx78xx->bridge);
 

drivers/gpu/drm/bridge/aux-bridge.c

···
 {
 	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);
···
 		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 */

drivers/gpu/drm/bridge/aux-hpd-bridge.c

···
 {
 	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;

drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c

···
 	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)) {
···
 	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;

drivers/gpu/drm/bridge/chipone-icn6211.c

···
 	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;
 
···
 	if (ret)
 		return ret;
 
-	icn->bridge.funcs = &chipone_bridge_funcs;
 	icn->bridge.type = DRM_MODE_CONNECTOR_DPI;
 	icn->bridge.of_node = dev->of_node;
 

drivers/gpu/drm/bridge/chrontel-ch7033.c

···
 	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);
 
···
 	}
 
 	INIT_LIST_HEAD(&priv->bridge.list);
-	priv->bridge.funcs = &ch7033_bridge_funcs;
 	priv->bridge.of_node = dev->of_node;
 	drm_bridge_add(&priv->bridge);
 

drivers/gpu/drm/bridge/cros-ec-anx7688.c

···
 	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);
···
 		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;

drivers/gpu/drm/bridge/fsl-ldb.c

···
 	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");

drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c

···
 	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,
···
 
 	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;

drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c

···
 	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;
···
 	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;
 

drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c

···
 	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) {
···
 	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);

drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c

···
 	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)) {
···
 	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);

drivers/gpu/drm/bridge/ite-it6263.c

···
 	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;
···
 
 	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 |

drivers/gpu/drm/bridge/ite-it6505.c

···
 	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);
···
 	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;

drivers/gpu/drm/bridge/ite-it66121.c

···
 		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)
···
 		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;

drivers/gpu/drm/bridge/lontium-lt8912b.c

···
 	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;
···
 
 	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);

drivers/gpu/drm/bridge/lontium-lt9211.c

···
 	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;
 
···
 	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);
 

drivers/gpu/drm/bridge/lontium-lt9611.c

···
 		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;
···
 	/* 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 |

drivers/gpu/drm/bridge/lvds-codec.c

···
 	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);
···
 						lvds_codec->connector_type);
 	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

drivers/gpu/drm/bridge/microchip-lvds.c

···
 	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;
 
···
 
 	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);

drivers/gpu/drm/bridge/nwl-dsi.c

···
 	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;
 
···
 		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;

drivers/gpu/drm/bridge/parade-ps8622.c

···
 	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))
···
 		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);

drivers/gpu/drm/bridge/parade-ps8640.c

···
 	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);
 
···
 	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;
 

drivers/gpu/drm/bridge/sii9234.c

···
 	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);
···
 
 	i2c_set_clientdata(client, ctx);
 
-	ctx->bridge.funcs = &sii9234_bridge_funcs;
 	ctx->bridge.of_node = dev->of_node;
 	drm_bridge_add(&ctx->bridge);
 

drivers/gpu/drm/bridge/sil-sii8620.c

···
 	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);
···
 
 	i2c_set_clientdata(client, ctx);
 
-	ctx->bridge.funcs = &sii8620_bridge_funcs;
 	ctx->bridge.of_node = dev->of_node;
 	drm_bridge_add(&ctx->bridge);
 

drivers/gpu/drm/bridge/simple-bridge.c

···
 	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);
 
···
 				     "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;
 

drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c

···
 		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;
 
···
 		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 |

drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c

···
 	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;
···
 	}
 
 	dsi->bridge.driver_private = dsi;
-	dsi->bridge.funcs = &dw_mipi_dsi_bridge_funcs;
 	dsi->bridge.of_node = pdev->dev.of_node;
 
 	return dsi;

drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c

···
 	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;
···
 	}
 
 	dsi2->bridge.driver_private = dsi2;
-	dsi2->bridge.funcs = &dw_mipi_dsi2_bridge_funcs;
 	dsi2->bridge.of_node = pdev->dev.of_node;
 
 	return dsi2;

drivers/gpu/drm/bridge/tc358762.c

···
 	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);
 
···
 	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;

drivers/gpu/drm/bridge/tc358764.c

···
 	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);
 
···
 	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;
 

drivers/gpu/drm/bridge/tc358768.c

···
 	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;
···
 	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;
 

drivers/gpu/drm/bridge/tc358775.c

···
 	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;
···
 		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);

drivers/gpu/drm/bridge/thc63lvd1024.c

···
 	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);
···
 
 	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);

drivers/gpu/drm/bridge/ti-dlpc3433.c

···
 	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;
 
···
 	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);
 

drivers/gpu/drm/bridge/ti-tdp158.c

···
 	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))
···
 		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;
 

drivers/gpu/drm/bridge/ti-tfp410.c

···
 		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;

drivers/gpu/drm/bridge/ti-tpd12s015.c

···
 	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;

drivers/gpu/drm/mediatek/mtk_dp.c

···
 	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);
···
 	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;
 

drivers/gpu/drm/mediatek/mtk_dpi.c

···
 	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);
···
 
 	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;
 

drivers/gpu/drm/mediatek/mtk_dsi.c

···
 	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);
 
···
 
 	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;
 

drivers/gpu/drm/mediatek/mtk_hdmi.c

···
 	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);
···
 		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;

drivers/gpu/drm/meson/meson_encoder_cvbs.c

···
 	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);
···
 				     "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;

drivers/gpu/drm/meson/meson_encoder_dsi.c

···
 	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);
···
 				     "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;
 

drivers/gpu/drm/meson/meson_encoder_hdmi.c

···
 	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);
···
 	}
 
 	/* 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;

drivers/gpu/drm/renesas/rcar-du/rcar_lvds.c

···
 	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);
 
···
 	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);

drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c

···
 	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;
···
 	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 */