linux-kernel - [PATCH v5 5/5] drm/tests: managed: Add a simple test for drmm_managed

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Date: Mon, 15 Jan 2024 18:13:51 +0100
From: Michał Winiarski <michal.winiarski@...el.com>
To: <intel-xe@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
	<linux-kernel@...r.kernel.org>
CC: Rodrigo Vivi <rodrigo.vivi@...el.com>, Michal Wajdeczko
	<michal.wajdeczko@...el.com>, Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>, Javier Martinez Canillas
	<javierm@...hat.com>, Maíra Canal <mcanal@...lia.com>,
	Michał Winiarski <michal.winiarski@...el.com>
Subject: [PATCH v5 5/5] drm/tests: managed: Add a simple test for drmm_managed_release

Add a simple test that checks whether the action is called when
drmm_managed_release is called.

Signed-off-by: Michał Winiarski <michal.winiarski@...el.com>
---
 drivers/gpu/drm/tests/drm_managed_test.c | 25 ++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_managed_test.c b/drivers/gpu/drm/tests/drm_managed_test.c
index d936c879a4a30..76eb273c9b364 100644
--- a/drivers/gpu/drm/tests/drm_managed_test.c
+++ b/drivers/gpu/drm/tests/drm_managed_test.c
@@ -25,6 +25,30 @@ static void drm_action(struct drm_device *drm, void *ptr)
 	wake_up_interruptible(&priv->action_wq);
 }
 
+/*
+ * The test verifies that the release action is called when
+ * drmm_release_action is called.
+ */
+static void drm_test_managed_release_action(struct kunit *test)
+{
+	struct managed_test_priv *priv = test->priv;
+	int ret;
+
+	ret = drmm_add_action_or_reset(priv->drm, drm_action, priv);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+
+	ret = drm_dev_register(priv->drm, 0);
+	KUNIT_ASSERT_EQ(test, ret, 0);
+
+	drmm_release_action(priv->drm, drm_action, priv);
+	ret = wait_event_interruptible_timeout(priv->action_wq, priv->action_done,
+					       msecs_to_jiffies(TEST_TIMEOUT_MS));
+	KUNIT_EXPECT_GT(test, ret, 0);
+
+	drm_dev_unregister(priv->drm);
+	drm_kunit_helper_free_device(test, priv->drm->dev);
+}
+
 /*
  * The test verifies that the release action is called automatically when the
  * device is released.
@@ -75,6 +99,7 @@ static int drm_managed_test_init(struct kunit *test)
 }
 
 static struct kunit_case drm_managed_tests[] = {
+	KUNIT_CASE(drm_test_managed_release_action),
 	KUNIT_CASE(drm_test_managed_run_action),
 	{}
 };
-- 
2.43.0