linux-kernel - [PATCH drm/hisilicon v2 2/4] drm/hisilicon: Code refactoring for hibmc_drm

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Message-ID: <1606823754-52451-3-git-send-email-tiantao6@hisilicon.com>
Date:   Tue, 1 Dec 2020 19:55:52 +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>, <maarten.lankhorst@...ux.intel.com>,
        <mripard@...nel.org>
CC:     <linux-kernel@...r.kernel.org>
Subject: [PATCH drm/hisilicon v2 2/4] drm/hisilicon: Code refactoring for hibmc_drm_drv

Use the devm_drm_dev_alloc provided by the drm framework to alloc
a struct hibmc_drm_private.

Signed-off-by: Tian Tao <tiantao6@...ilicon.com>
---
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 16 ++++++----------
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h |  2 +-
 2 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index dd9fadc..c5b0b57 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -262,13 +262,6 @@ static int hibmc_load(struct drm_device *dev)
 	struct hibmc_drm_private *priv = to_hibmc_drm_private(dev);
 	int ret;
 
-	priv = drmm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv) {
-		drm_err(dev, "no memory to allocate for hibmc_drm_private\n");
-		return -ENOMEM;
-	}
-	dev->dev_private = priv;
-
 	ret = hibmc_hw_init(priv);
 	if (ret)
 		goto err;
@@ -311,6 +304,7 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
 			   const struct pci_device_id *ent)
 {
 	struct drm_device *dev;
+	struct hibmc_drm_private *priv;
 	int ret;
 
 	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev,
@@ -318,12 +312,14 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
 	if (ret)
 		return ret;
 
-	dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
-	if (IS_ERR(dev)) {
+	priv = devm_drm_dev_alloc(&pdev->dev, &hibmc_driver,
+				  struct hibmc_drm_private, dev);
+	if (IS_ERR(priv)) {
 		DRM_ERROR("failed to allocate drm_device\n");
-		return PTR_ERR(dev);
+		return PTR_ERR(priv);
 	}
 
+	dev = &priv->dev;
 	dev->pdev = pdev;
 	pci_set_drvdata(pdev, dev);
 
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
index e35353a..7e0c756 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
@@ -52,7 +52,7 @@ static inline struct hibmc_connector *to_hibmc_connector(struct drm_connector *c
 
 static inline struct hibmc_drm_private *to_hibmc_drm_private(struct drm_device *dev)
 {
-	return dev->dev_private;
+	return container_of(dev, struct hibmc_drm_private, dev);
 }
 
 void hibmc_set_power_mode(struct hibmc_drm_private *priv,
-- 
2.7.4