[PATCH 30/51] drm/cirrus: Fully embrace devm_

From: Daniel Vetter <daniel.vetter@ffwll.ch>
To: DRI Development <dri-devel@lists.freedesktop.org>
Cc: "Daniel Vetter" <daniel.vetter@ffwll.ch>,
	"Intel Graphics Development" <intel-gfx@lists.freedesktop.org>,
	m.felsch@pengutronix.de,
	virtualization@lists.linux-foundation.org,
	"Noralf Trønnes" <noralf@tronnes.org>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"Dave Airlie" <airlied@redhat.com>,
	"Daniel Vetter" <daniel.vetter@intel.com>,
	"Emil Velikov" <emil.velikov@collabora.com>,
	l.stach@pengutronix.de
Subject: [PATCH 30/51] drm/cirrus: Fully embrace devm_
Date: Thu, 27 Feb 2020 19:15:01 +0100	[thread overview]
Message-ID: <20200227181522.2711142-31-daniel.vetter@ffwll.ch> (raw)
In-Reply-To: <20200227181522.2711142-1-daniel.vetter@ffwll.ch>

With the drm_device lifetime fun cleaned up there's nothing in the way
anymore to use devm_ for everything hw releated. Do it, and in the
process, throw out the entire onion unwinding.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: "Noralf Trønnes" <noralf@tronnes.org>
Cc: Emil Velikov <emil.velikov@collabora.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: virtualization@lists.linux-foundation.org
---
 drivers/gpu/drm/cirrus/cirrus.c | 44 +++++++++++----------------------
 1 file changed, 14 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/cirrus/cirrus.c b/drivers/gpu/drm/cirrus/cirrus.c
index 6ac0286810ec..1b78a2f88f69 100644
--- a/drivers/gpu/drm/cirrus/cirrus.c
+++ b/drivers/gpu/drm/cirrus/cirrus.c
@@ -558,7 +558,7 @@ static int cirrus_pci_probe(struct pci_dev *pdev,
 	if (ret)
 		return ret;
 
-	ret = pci_enable_device(pdev);
+	ret = pcim_enable_device(pdev);
 	if (ret)
 		return ret;
 
@@ -569,39 +569,38 @@ static int cirrus_pci_probe(struct pci_dev *pdev,
 	ret = -ENOMEM;
 	cirrus = kzalloc(sizeof(*cirrus), GFP_KERNEL);
 	if (cirrus == NULL)
-		goto err_pci_release;
+		return ret;
 
 	dev = &cirrus->dev;
-	ret = drm_dev_init(dev, &cirrus_driver, &pdev->dev);
+	ret = devm_drm_dev_init(&pdev->dev, dev, &cirrus_driver);
 	if (ret) {
 		kfree(cirrus);
-		goto err_pci_release;
+		return ret;
 	}
 	dev->dev_private = cirrus;
 	drmm_add_final_kfree(dev, cirrus);
 
-	ret = -ENOMEM;
-	cirrus->vram = ioremap(pci_resource_start(pdev, 0),
-			       pci_resource_len(pdev, 0));
+	cirrus->vram = devm_ioremap(&pdev->dev, pci_resource_start(pdev, 0),
+				    pci_resource_len(pdev, 0));
 	if (cirrus->vram == NULL)
-		goto err_dev_put;
+		return -ENOMEM;
 
-	cirrus->mmio = ioremap(pci_resource_start(pdev, 1),
-			       pci_resource_len(pdev, 1));
+	cirrus->mmio = devm_ioremap(&pdev->dev, pci_resource_start(pdev, 1),
+				    pci_resource_len(pdev, 1));
 	if (cirrus->mmio == NULL)
-		goto err_unmap_vram;
+		return -ENOMEM;
 
 	ret = cirrus_mode_config_init(cirrus);
 	if (ret)
-		goto err_cleanup;
+		return ret;
 
 	ret = cirrus_conn_init(cirrus);
 	if (ret < 0)
-		goto err_cleanup;
+		return ret;
 
 	ret = cirrus_pipe_init(cirrus);
 	if (ret < 0)
-		goto err_cleanup;
+		return ret;
 
 	drm_mode_config_reset(dev);
 
@@ -609,33 +608,18 @@ static int cirrus_pci_probe(struct pci_dev *pdev,
 	pci_set_drvdata(pdev, dev);
 	ret = drm_dev_register(dev, 0);
 	if (ret)
-		goto err_cleanup;
+		return ret;
 
 	drm_fbdev_generic_setup(dev, dev->mode_config.preferred_depth);
 	return 0;
-
-err_cleanup:
-	iounmap(cirrus->mmio);
-err_unmap_vram:
-	iounmap(cirrus->vram);
-err_dev_put:
-	drm_dev_put(dev);
-err_pci_release:
-	pci_release_regions(pdev);
-	return ret;
 }
 
 static void cirrus_pci_remove(struct pci_dev *pdev)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);
-	struct cirrus_device *cirrus = dev->dev_private;
 
 	drm_dev_unplug(dev);
 	drm_atomic_helper_shutdown(dev);
-	iounmap(cirrus->mmio);
-	iounmap(cirrus->vram);
-	drm_dev_put(dev);
-	pci_release_regions(pdev);
 }
 
 static const struct pci_device_id pciidlist[] = {
-- 
2.24.1

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