drm/hisilicon: Use managed mode-config init

Using drmm_mode_config_init() sets up managed release of modesetting
resources.

v2:
Remove the unused structure member variable mode_config_initialized.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1607339778-20460-2-git-send-email-tiantao6@hisilicon.com

drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c

@@ -96,8 +96,9 @@ static int hibmc_kms_init(struct hibmc_drm_private *priv)
 	struct drm_device *dev = &priv->dev;
 	int ret;
 
-	drm_mode_config_init(dev);
-	priv->mode_config_initialized = true;
+	ret = drmm_mode_config_init(dev);
+	if (ret)
+		return ret;
 
 	dev->mode_config.min_width = 0;
 	dev->mode_config.min_height = 0;
@@ -125,14 +126,6 @@ static int hibmc_kms_init(struct hibmc_drm_private *priv)
 	return 0;
 }
 
-static void hibmc_kms_fini(struct hibmc_drm_private *priv)
-{
-	if (priv->mode_config_initialized) {
-		drm_mode_config_cleanup(&priv->dev);
-		priv->mode_config_initialized = false;
-	}
-}
-
 /*
  * It can operate in one of three modes: 0, 1 or Sleep.
  */
@@ -262,7 +255,6 @@ static int hibmc_unload(struct drm_device *dev)
 	drm_atomic_helper_shutdown(dev);
 
 	pci_disable_msi(dev->pdev);
-	hibmc_kms_fini(priv);
 	dev->dev_private = NULL;
 	return 0;
 }

drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h

@@ -42,7 +42,6 @@ struct hibmc_drm_private {
 	struct drm_crtc crtc;
 	struct drm_encoder encoder;
 	struct hibmc_connector connector;
-	bool mode_config_initialized;
 };
 
 static inline struct hibmc_connector *to_hibmc_connector(struct drm_connector *connector)