From 03d14926451846fc52daa5f04693891f4cb2231e Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Mon, 25 Oct 2021 17:15:33 +0200
Subject: drm/bridge: tc358775: Switch to devm MIPI-DSI helpers
Git-commit: 526dcedf877fab36d2847fa1446975ab4285f226
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

Let's switch to the new devm MIPI-DSI function to register and attach
our secondary device. This also avoids leaking the device when we detach
the bridge.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211025151536.1048186-19-maxime@cerno.tech
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/bridge/tc358775.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
index 2272adcc5b4a..35e66d1b6456 100644
--- a/drivers/gpu/drm/bridge/tc358775.c
+++ b/drivers/gpu/drm/bridge/tc358775.c
@@ -610,11 +610,10 @@ static int tc_bridge_attach(struct drm_bridge *bridge,
 		return -EPROBE_DEFER;
 	}
 
-	dsi = mipi_dsi_device_register_full(host, &info);
+	dsi = devm_mipi_dsi_device_register_full(dev, host, &info);
 	if (IS_ERR(dsi)) {
 		dev_err(dev, "failed to create dsi device\n");
-		ret = PTR_ERR(dsi);
-		goto err_dsi_device;
+		return PTR_ERR(dsi);
 	}
 
 	tc->dsi = dsi;
@@ -623,19 +622,15 @@ static int tc_bridge_attach(struct drm_bridge *bridge,
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO;
 
-	ret = mipi_dsi_attach(dsi);
+	ret = devm_mipi_dsi_attach(dev, dsi);
 	if (ret < 0) {
 		dev_err(dev, "failed to attach dsi to host\n");
-		goto err_dsi_attach;
+		return ret;
 	}
 
 	/* Attach the panel-bridge to the dsi bridge */
 	return drm_bridge_attach(bridge->encoder, tc->panel_bridge,
 				 &tc->bridge, flags);
-err_dsi_attach:
-	mipi_dsi_device_unregister(dsi);
-err_dsi_device:
-	return ret;
 }
 
 static const struct drm_bridge_funcs tc_bridge_funcs = {
-- 
2.38.1