Unverified Commit 1bb74f6c authored by Carlos Eduardo Gallo Filho's avatar Carlos Eduardo Gallo Filho Committed by Maxime Ripard
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drm/tests: Add test for drm_framebuffer_cleanup() 



Add a single KUnit test case for the drm_framebuffer_cleanup function.

Signed-off-by: default avatarCarlos Eduardo Gallo Filho <gcarlos@disroot.org>
Acked-by: default avatarMaxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240911001559.28284-7-gcarlos@disroot.org


Signed-off-by: default avatarMaxime Ripard <mripard@kernel.org>
parent 49cdbcba

drivers/gpu/drm/tests/drm_framebuffer_test.c

+32 −0
Original line number Diff line number Diff line
@@ -498,8 +498,40 @@ check_src_coords_test_to_desc(const struct drm_framebuffer_check_src_coords_case 
KUNIT_ARRAY_PARAM(check_src_coords, drm_framebuffer_check_src_coords_cases,

		  check_src_coords_test_to_desc);



/*

 * Test if drm_framebuffer_cleanup() really pops out the framebuffer object

 * from device's fb_list and decrement the number of framebuffers for that

 * device, which is the only things it does.

 */

static void drm_test_framebuffer_cleanup(struct kunit *test)

{

	struct drm_framebuffer_test_priv *priv = test->priv;

	struct drm_device *dev = &priv->dev;

	struct list_head *fb_list = &dev->mode_config.fb_list;

	struct drm_format_info format = { };

	struct drm_framebuffer fb1 = { .dev = dev, .format = &format };

	struct drm_framebuffer fb2 = { .dev = dev, .format = &format };



	/* This will result on [fb_list] -> fb2 -> fb1 */

	drm_framebuffer_init(dev, &fb1, NULL);

	drm_framebuffer_init(dev, &fb2, NULL);



	drm_framebuffer_cleanup(&fb1);



	/* Now fb2 is the only one element on fb_list */

	KUNIT_ASSERT_TRUE(test, list_is_singular(&fb2.head));

	KUNIT_ASSERT_EQ(test, dev->mode_config.num_fb, 1);



	drm_framebuffer_cleanup(&fb2);



	/* Now fb_list is empty */

	KUNIT_ASSERT_TRUE(test, list_empty(fb_list));

	KUNIT_ASSERT_EQ(test, dev->mode_config.num_fb, 0);

}



static struct kunit_case drm_framebuffer_tests[] = {

	KUNIT_CASE_PARAM(drm_test_framebuffer_check_src_coords, check_src_coords_gen_params),

	KUNIT_CASE(drm_test_framebuffer_cleanup),

	KUNIT_CASE_PARAM(drm_test_framebuffer_create, drm_framebuffer_create_gen_params),

	KUNIT_CASE(drm_test_framebuffer_modifiers_not_supported),

	{ }