linux-kernel - [PATCH v2 3/3] drm/tests: managed: Add a simple test for drmm_managed

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Message-ID: <20231205012210.1491532-4-michal.winiarski@intel.com>
Date:   Tue, 5 Dec 2023 02:22:10 +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 v2 3/3] drm/tests: managed: Add a simple test for drmm_managed_release

Add a simple test that checks whether the action is indeed called right
away and that it is not called on the final drm_dev_put().

Signed-off-by: Michał Winiarski <michal.winiarski@...el.com>
---
 drivers/gpu/drm/tests/drm_managed_test.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_managed_test.c b/drivers/gpu/drm/tests/drm_managed_test.c
index cabe6360aef71..8dfbea21c35c5 100644
--- a/drivers/gpu/drm/tests/drm_managed_test.c
+++ b/drivers/gpu/drm/tests/drm_managed_test.c
@@ -44,6 +44,29 @@ static void drm_test_managed_run_action(struct kunit *test)
 	KUNIT_EXPECT_GT(test, ret, 0);
 }
 
+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);
+	KUNIT_EXPECT_TRUE(test, priv->action_done);
+	priv->action_done = false;
+
+	drm_dev_unregister(&priv->drm);
+	drm_kunit_helper_free_device(test, priv->drm.dev);
+
+	ret = wait_event_interruptible_timeout(priv->action_wq, priv->action_done,
+					       msecs_to_jiffies(TEST_TIMEOUT_MS));
+	KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
 static int drm_managed_test_init(struct kunit *test)
 {
 	struct managed_test_priv *priv;
@@ -65,6 +88,7 @@ static int drm_managed_test_init(struct kunit *test)
 
 static struct kunit_case drm_managed_tests[] = {
 	KUNIT_CASE(drm_test_managed_run_action),
+	KUNIT_CASE(drm_test_managed_release_action),
 	{}
 };
 
-- 
2.43.0