linux-kernel - [PATCH] drm/hisilicon: Add the shutdown for hibmc_pci

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Date:   Sat, 11 Apr 2020 10:49:30 +0800
From:   Tian Tao <tiantao6@...ilicon.com>
To:     <puck.chen@...ilicon.com>, <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>
CC:     <linuxarm@...wei.com>
Subject: [PATCH] drm/hisilicon: Add the shutdown for hibmc_pci_driver

add the shutdown function to release the resource.

Signed-off-by: Tian Tao <tiantao6@...ilicon.com>
---
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index a6fd0c2..126d4f4 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -232,6 +232,21 @@ static int hibmc_hw_map(struct hibmc_drm_private *priv)
 	return 0;
 }
 
+static void hibmc_hw_unmap(struct hibmc_drm_private *priv)
+{
+	struct drm_device *dev = priv->dev;
+
+	if (priv->mmio)	{
+		devm_iounmap(dev->dev, priv->mmio);
+		priv->mmio = NULL;
+	}
+
+	if (priv->fb_map) {
+		devm_iounmap(dev->dev, priv->fb_map);
+		priv->fb_map = NULL;
+	}
+}
+
 static int hibmc_hw_init(struct hibmc_drm_private *priv)
 {
 	int ret;
@@ -258,6 +273,7 @@ static int hibmc_unload(struct drm_device *dev)
 
 	hibmc_kms_fini(priv);
 	hibmc_mm_fini(priv);
+	hibmc_hw_unmap(priv);
 	dev->dev_private = NULL;
 	return 0;
 }
@@ -374,6 +390,12 @@ static void hibmc_pci_remove(struct pci_dev *pdev)
 	drm_dev_unregister(dev);
 	hibmc_unload(dev);
 	drm_dev_put(dev);
+	pci_disable_device(pdev);
+}
+
+static void hibmc_pci_shutdown(struct pci_dev *pdev)
+{
+	hibmc_pci_remove(pdev);
 }
 
 static struct pci_device_id hibmc_pci_table[] = {
@@ -386,6 +408,7 @@ static struct pci_driver hibmc_pci_driver = {
 	.id_table =	hibmc_pci_table,
 	.probe =	hibmc_pci_probe,
 	.remove =	hibmc_pci_remove,
+	.shutdown = hibmc_pci_shutdown,
 	.driver.pm =    &hibmc_pm_ops,
 };
 
-- 
2.7.4