[PATCH] drm/i915/selftests: align more to real device lifetimes

[Daniel Vetter]

The big change is device_add so that device_del can auto-cleanup
devres resources. This allows us to use devm_drm_dev_alloc, which
removes the last user of drm_dev_init.

v2: Rebased

Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 .../gpu/drm/i915/selftests/mock_gem_device.c  | 33 +++++++++----------
 1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
index 41afc357f4d0..1ab97fa55929 100644
--- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -123,12 +123,6 @@ struct drm_i915_private *mock_gem_device(void)
 	pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
 	if (!pdev)
 		return NULL;
-	i915 = kzalloc(sizeof(*i915), GFP_KERNEL);
-	if (!i915) {
-		kfree(pdev);
-		return NULL;
-	}
-
 	device_initialize(&pdev->dev);
 	pdev->class = PCI_BASE_CLASS_DISPLAY << 16;
 	pdev->dev.release = release_dev;
@@ -139,8 +133,23 @@ struct drm_i915_private *mock_gem_device(void)
 	/* hack to disable iommu for the fake device; force identity mapping */
 	pdev->dev.archdata.iommu = (void *)-1;
 #endif
+	err = device_add(&pdev->dev);
+	if (err) {
+		kfree(pdev);
+		return NULL;
+	}
+
+	i915 = devm_drm_dev_alloc(&pdev->dev, &mock_driver,
+				  struct drm_i915_private, drm);
+	if (err) {
+		pr_err("Failed to allocate mock GEM device: err=%d\n", err);
+		put_device(&pdev->dev);
+
+		return NULL;
+	}
 
 	pci_set_drvdata(pdev, i915);
+	i915->drm.pdev = pdev;
 
 	dev_pm_domain_set(&pdev->dev, &pm_domain);
 	pm_runtime_enable(&pdev->dev);
@@ -148,16 +157,6 @@ struct drm_i915_private *mock_gem_device(void)
 	if (pm_runtime_enabled(&pdev->dev))
 		WARN_ON(pm_runtime_get_sync(&pdev->dev));
 
-	err = drm_dev_init(&i915->drm, &mock_driver, &pdev->dev);
-	if (err) {
-		pr_err("Failed to initialise mock GEM device: err=%d\n", err);
-		put_device(&pdev->dev);
-		kfree(i915);
-
-		return NULL;
-	}
-	i915->drm.pdev = pdev;
-	drmm_add_final_kfree(&i915->drm, i915);
 
 	intel_runtime_pm_init_early(&i915->runtime_pm);
 
@@ -221,5 +220,5 @@ struct drm_i915_private *mock_gem_device(void)
 
 void mock_destroy_device(struct drm_i915_private *i915)
 {
-	drm_dev_put(&i915->drm);
+	device_del(i915->drm.dev);
 }
-- 
2.25.1