[PATCH v4 RESEND 4/9] drm/tests: Add test case for drm_internal_framebuffer_create()

[Carlos Eduardo Gallo Filho]

Introduce a test to cover the creation of framebuffer with
modifier on a device that doesn't support it.

Signed-off-by: Carlos Eduardo Gallo Filho <gcar...@disroot.org>
---
v2:
  - Reorder kunit cases alphabetically.
v3:
  - Replace the use of void pointer on drm_framebuffer_test_priv struct.
  - Test return value of drm_internal_framebuffer_create().
  - Change test documentation to don't rely on another test.
v4:
  - Reorder expectation value.
  - Remove unneeded expectation.
---
 drivers/gpu/drm/tests/drm_framebuffer_test.c | 24 ++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_framebuffer_test.c 
b/drivers/gpu/drm/tests/drm_framebuffer_test.c
index 4b1884be9d7a..2ea3abfd5e7a 100644
--- a/drivers/gpu/drm/tests/drm_framebuffer_test.c
+++ b/drivers/gpu/drm/tests/drm_framebuffer_test.c
@@ -415,8 +415,32 @@ static void drm_framebuffer_test_to_desc(const struct 
drm_framebuffer_test *t, c
 KUNIT_ARRAY_PARAM(drm_framebuffer_create, drm_framebuffer_create_cases,
                  drm_framebuffer_test_to_desc);
 
+/* Tries to create a framebuffer with modifiers without drm_device supporting 
it */
+static void drm_test_framebuffer_modifiers_not_supported(struct kunit *test)
+{
+       struct drm_framebuffer_test_priv *priv = test->priv;
+       struct drm_device *dev = &priv->dev;
+       struct drm_framebuffer *fb;
+
+       /* A valid cmd with modifier */
+       struct drm_mode_fb_cmd2 cmd = {
+               .width = MAX_WIDTH, .height = MAX_HEIGHT,
+               .pixel_format = DRM_FORMAT_ABGR8888, .handles = { 1, 0, 0 },
+               .offsets = { UINT_MAX / 2, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 
0, 0 },
+               .flags = DRM_MODE_FB_MODIFIERS,
+       };
+
+       priv->buffer_created = false;
+       dev->mode_config.fb_modifiers_not_supported = 1;
+
+       fb = drm_internal_framebuffer_create(dev, &cmd, NULL);
+       KUNIT_EXPECT_EQ(test, priv->buffer_created, false);
+       KUNIT_EXPECT_EQ(test, PTR_ERR(fb), -EINVAL);
+}
+
 static struct kunit_case drm_framebuffer_tests[] = {
        KUNIT_CASE_PARAM(drm_test_framebuffer_create, 
drm_framebuffer_create_gen_params),
+       KUNIT_CASE(drm_test_framebuffer_modifiers_not_supported),
        { }
 };
 
-- 
2.44.2