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drm/tests: Add test for drm_framebuffer_free()

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Add a single KUnit test case for the drm_framebuffer_free 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/20240911001559.28284-10-gcarlos@disroot.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
This commit is contained in:
Carlos Eduardo Gallo Filho
2024-09-10 21:15:34 -03:00
committed by Maxime Ripard
parent 2735d5e406
commit d219425604
2 changed files with 51 additions and 0 deletions
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50
drivers/gpu/drm/tests/drm_framebuffer_test.c
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@@ -358,6 +358,7 @@ static const struct drm_framebuffer_test drm_framebuffer_create_cases[] = {
struct drm_framebuffer_test_priv {
struct drm_device dev;
bool buffer_created;
bool buffer_freed;
};
static struct drm_framebuffer *fb_create_mock(struct drm_device *dev,
@@ -649,10 +650,59 @@ static void drm_test_framebuffer_init_dev_mismatch(struct kunit *test)
KUNIT_EXPECT_EQ(test, ret, -EINVAL);
}
static void destroy_free_mock(struct drm_framebuffer *fb)
{
struct drm_framebuffer_test_priv *priv = container_of(fb->dev, typeof(*priv), dev);
priv->buffer_freed = true;
}
static struct drm_framebuffer_funcs framebuffer_funcs_free_mock = {
.destroy = destroy_free_mock,
};
/*
* In summary, the drm_framebuffer_free() function must implicitly call
* fb->funcs->destroy() and garantee that the framebufer object is unregistered
* from the drm_device idr pool.
*/
static void drm_test_framebuffer_free(struct kunit *test)
{
struct drm_framebuffer_test_priv *priv = test->priv;
struct drm_device *dev = &priv->dev;
struct drm_mode_object *obj;
struct drm_framebuffer fb = {
.dev = dev,
.funcs = &framebuffer_funcs_free_mock,
};
int id, ret;
priv->buffer_freed = false;
/*
* Mock a framebuffer that was not unregistered at the moment of the
* drm_framebuffer_free() call.
*/
ret = drm_mode_object_add(dev, &fb.base, DRM_MODE_OBJECT_FB);
KUNIT_ASSERT_EQ(test, ret, 0);
id = fb.base.id;
drm_framebuffer_free(&fb.base.refcount);
/* The framebuffer object must be unregistered */
obj = drm_mode_object_find(dev, NULL, id, DRM_MODE_OBJECT_FB);
KUNIT_EXPECT_PTR_EQ(test, obj, NULL);
KUNIT_EXPECT_EQ(test, fb.base.id, 0);
/* Test if fb->funcs->destroy() was called */
KUNIT_EXPECT_EQ(test, priv->buffer_freed, true);
}
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_free),
KUNIT_CASE(drm_test_framebuffer_init),
KUNIT_CASE(drm_test_framebuffer_init_bad_format),
KUNIT_CASE(drm_test_framebuffer_init_dev_mismatch),