linux-kernel - [PATCH drm/hisilicon v2 1/2] drm/hisilicon: Use managed mode-config init

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Date:   Mon, 7 Dec 2020 17:05:05 +0800
From:   Tian Tao <tiantao6@...ilicon.com>
To:     <airlied@...ux.ie>, <daniel@...ll.ch>, <tzimmermann@...e.de>,
        <kraxel@...hat.com>, <alexander.deucher@....com>,
        <tglx@...utronix.de>, <dri-devel@...ts.freedesktop.org>,
        <xinliang.liu@...aro.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH drm/hisilicon v2 1/2] drm/hisilicon: Use managed mode-config init

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

Signed-off-by: Tian Tao <tiantao6@...ilicon.com>
---
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 14 +++-----------
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h |  1 -
 2 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 3687753..7f01213 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/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;
 }
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
index a49c10e..7d263f4 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
+++ b/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)
-- 
2.7.4