From: Maxime Ripard <maxime@cerno.tech>
Date: Mon, 25 Oct 2021 15:15:19 +0000 (+0200)
Subject: drm/bridge: anx7625: Register and attach our DSI device at probe
X-Git-Tag: block-5.17-2022-01-21~94^2~20^2~136
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=49e61bee26f746aaf2eba84ba3c9a90ab950ea05;p=linux-block.git

drm/bridge: anx7625: Register and attach our DSI device at probe

In order to avoid any probe ordering issue, the best practice is to move
the secondary MIPI-DSI device registration and attachment to the
MIPI-DSI host at probe time. Let's do this.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211025151536.1048186-5-maxime@cerno.tech
---

diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index 4adeb2bad03a..d0317651cd75 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -1367,12 +1367,6 @@ static int anx7625_bridge_attach(struct drm_bridge *bridge,
 		return -ENODEV;
 	}
 
-	err = anx7625_attach_dsi(ctx);
-	if (err) {
-		DRM_DEV_ERROR(dev, "Fail to attach to dsi : %d\n", err);
-		return err;
-	}
-
 	if (ctx->pdata.panel_bridge) {
 		err = drm_bridge_attach(bridge->encoder,
 					ctx->pdata.panel_bridge,
@@ -1845,10 +1839,24 @@ static int anx7625_i2c_probe(struct i2c_client *client,
 	platform->bridge.type = DRM_MODE_CONNECTOR_eDP;
 	drm_bridge_add(&platform->bridge);
 
+	ret = anx7625_attach_dsi(platform);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "Fail to attach to dsi : %d\n", ret);
+		goto unregister_bridge;
+	}
+
 	DRM_DEV_DEBUG_DRIVER(dev, "probe done\n");
 
 	return 0;
 
+unregister_bridge:
+	drm_bridge_remove(&platform->bridge);
+
+	if (!platform->pdata.low_power_mode)
+		pm_runtime_put_sync_suspend(&client->dev);
+
+	anx7625_unregister_i2c_dummy_clients(platform);
+
 free_wq:
 	if (platform->workqueue)
 		destroy_workqueue(platform->workqueue);