linux-kernel - [PATCH 01/11] drm/tests: helpers: Switch to kunit actions

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Message-Id: <20230710-kms-kunit-actions-rework-v1-1-722c58d72c72@kernel.org>
Date:   Mon, 10 Jul 2023 09:47:32 +0200
From:   Maxime Ripard <mripard@...nel.org>
To:     David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Emma Anholt <emma@...olt.net>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Maxime Ripard <mripard@...nel.org>
Subject: [PATCH 01/11] drm/tests: helpers: Switch to kunit actions

Signed-off-by: Maxime Ripard <mripard@...nel.org>
---
 drivers/gpu/drm/tests/drm_kunit_helpers.c | 32 +++++++++++++++++++++++++++----
 1 file changed, 28 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/tests/drm_kunit_helpers.c b/drivers/gpu/drm/tests/drm_kunit_helpers.c
index 4df47071dc88..38211fea9ae6 100644
--- a/drivers/gpu/drm/tests/drm_kunit_helpers.c
+++ b/drivers/gpu/drm/tests/drm_kunit_helpers.c
@@ -35,8 +35,8 @@ static struct platform_driver fake_platform_driver = {
  * able to leverage the usual infrastructure and most notably the
  * device-managed resources just like a "real" device.
  *
- * Callers need to make sure drm_kunit_helper_free_device() on the
- * device when done.
+ * Resources will be cleaned up automatically, but the removal can be
+ * forced using @drm_kunit_helper_free_device.
  *
  * Returns:
  * A pointer to the new device, or an ERR_PTR() otherwise.
@@ -49,12 +49,31 @@ struct device *drm_kunit_helper_alloc_device(struct kunit *test)
 	ret = platform_driver_register(&fake_platform_driver);
 	KUNIT_ASSERT_EQ(test, ret, 0);
 
+	ret = kunit_add_action_or_reset(test,
+					(kunit_action_t *)platform_driver_unregister,
+					&fake_platform_driver);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
 	pdev = platform_device_alloc(KUNIT_DEVICE_NAME, PLATFORM_DEVID_NONE);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev);
 
+	ret = kunit_add_action_or_reset(test,
+					(kunit_action_t *)platform_device_put,
+					pdev);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
 	ret = platform_device_add(pdev);
 	KUNIT_ASSERT_EQ(test, ret, 0);
 
+	kunit_remove_action(test,
+			    (kunit_action_t *)platform_device_put,
+			    pdev);
+
+	ret = kunit_add_action_or_reset(test,
+					(kunit_action_t *)platform_device_unregister,
+					pdev);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
 	return &pdev->dev;
 }
 EXPORT_SYMBOL_GPL(drm_kunit_helper_alloc_device);
@@ -70,8 +89,13 @@ void drm_kunit_helper_free_device(struct kunit *test, struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 
-	platform_device_unregister(pdev);
-	platform_driver_unregister(&fake_platform_driver);
+	kunit_release_action(test,
+			     (kunit_action_t *)platform_device_unregister,
+			     pdev);
+
+	kunit_release_action(test,
+			     (kunit_action_t *)platform_driver_unregister,
+			     &fake_platform_driver);
 }
 EXPORT_SYMBOL_GPL(drm_kunit_helper_free_device);
 

-- 
2.41.0