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drm/tests: Add test for drm_framebuffer_cleanup()

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Add a single KUnit test case for the drm_framebuffer_cleanup function.

Signed-off-by: Carlos Eduardo Gallo Filho <gcarlos@disroot.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240911001559.28284-7-gcarlos@disroot.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
This commit is contained in:
Carlos Eduardo Gallo Filho
2024-09-10 21:15:31 -03:00
committed by Maxime Ripard
parent 49cdbcbad6
commit 1bb74f6cc3
1 changed files with 32 additions and 0 deletions
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32
drivers/gpu/drm/tests/drm_framebuffer_test.c
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@@ -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),
{ }