From daee54263c1202cbdab85c5e15ae30b417602efb Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Date: Fri, 10 Nov 2017 17:38:34 +0100
Subject: [PATCH] drm/fsl-dcu: Don't set connector DPMS property
Git-commit: daee54263c1202cbdab85c5e15ae30b417602efb
Patch-mainline: v4.15-rc1
References: FATE#322643 bsc#1055900

Since commit 4a97a3da420b ("drm: Don't update property values for atomic
drivers") atomic drivers must not update property values as properties
are read from the state instead. To catch remaining users, the
drm_object_property_set_value() function now throws a warning when
called by atomic drivers on non-immutable properties, and we hit that
warning when creating connectors.

The easy fix is to just remove the drm_object_property_set_value() as it
is used here to set the initial value of the connector's DPMS property
to OFF. The DPMS property applies on top of the connector's state crtc
pointer (initialized to NULL) that is the main connector on/off control,
and should thus default to ON.

Fixes: 4a97a3da420b ("drm: Don't update property values for atomic drivers")
Cc: stable@vger.kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c |    5 -----
 1 file changed, 5 deletions(-)

--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c
@@ -102,7 +102,6 @@ static int fsl_dcu_attach_panel(struct f
 {
 	struct drm_encoder *encoder = &fsl_dev->encoder;
 	struct drm_connector *connector = &fsl_dev->connector.base;
-	struct drm_mode_config *mode_config = &fsl_dev->drm->mode_config;
 	int ret;
 
 	fsl_dev->connector.encoder = encoder;
@@ -122,10 +121,6 @@ static int fsl_dcu_attach_panel(struct f
 	if (ret < 0)
 		goto err_sysfs;
 
-	drm_object_property_set_value(&connector->base,
-				      mode_config->dpms_property,
-				      DRM_MODE_DPMS_OFF);
-
 	ret = drm_panel_attach(panel, connector);
 	if (ret) {
 		dev_err(fsl_dev->dev, "failed to attach panel\n");