Re: [PATCH v2 4/4] drm/tests: hdmi: Fix recursive locking

From: Simona Vetter
Date: Tue Feb 04 2025 - 06:17:59 EST

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On Wed, Jan 29, 2025 at 03:21:56PM +0100, Maxime Ripard wrote:
> The find_preferred_mode() functions takes the mode_config mutex, but due
> to the order most tests have, is called with the crtc_ww_class_mutex
> taken. This raises a warning for a circular dependency when running the
> tests with lockdep.
>
> Reorder the tests to call find_preferred_mode before the acquire context
> has been created to avoid the issue.
>
> Signed-off-by: Maxime Ripard <mripard@xxxxxxxxxx>

On the last two patches: Reviewed-by: Simona Vetter <simona.vetter@xxxxxxxx>

> ---
> drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 114 ++++++++++-----------
> 1 file changed, 57 insertions(+), 57 deletions(-)
>
> diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
> index c265d28631603f266ba606564e77b8f965b7f83b..037c19875daf8b9b13e7702c8640dde1547f817c 100644
> --- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
> +++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
> @@ -291,16 +291,16 @@ static void drm_test_check_broadcast_rgb_crtc_mode_changed(struct kunit *test)
>
> drm = &priv->drm;
> crtc = priv->crtc;
> conn = &priv->connector;
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
> @@ -355,16 +355,16 @@ static void drm_test_check_broadcast_rgb_crtc_mode_not_changed(struct kunit *tes
>
> drm = &priv->drm;
> crtc = priv->crtc;
> conn = &priv->connector;
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
> @@ -420,17 +420,17 @@ static void drm_test_check_broadcast_rgb_auto_cea_mode(struct kunit *test)
> drm = &priv->drm;
> crtc = priv->crtc;
> conn = &priv->connector;
> KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
> KUNIT_ASSERT_NE(test, drm_match_cea_mode(preferred), 1);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
> @@ -531,17 +531,17 @@ static void drm_test_check_broadcast_rgb_full_cea_mode(struct kunit *test)
> drm = &priv->drm;
> crtc = priv->crtc;
> conn = &priv->connector;
> KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
> KUNIT_ASSERT_NE(test, drm_match_cea_mode(preferred), 1);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
> @@ -646,17 +646,17 @@ static void drm_test_check_broadcast_rgb_limited_cea_mode(struct kunit *test)
> drm = &priv->drm;
> crtc = priv->crtc;
> conn = &priv->connector;
> KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
> KUNIT_ASSERT_NE(test, drm_match_cea_mode(preferred), 1);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
> @@ -766,16 +766,16 @@ static void drm_test_check_output_bpc_crtc_mode_changed(struct kunit *test)
> ret = set_connector_edid(test, conn,
> test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
> ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
> KUNIT_ASSERT_GT(test, ret, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
> @@ -840,16 +840,16 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
> ret = set_connector_edid(test, conn,
> test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
> ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
> KUNIT_ASSERT_GT(test, ret, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
> KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
> @@ -914,16 +914,16 @@ static void drm_test_check_output_bpc_dvi(struct kunit *test)
> KUNIT_ASSERT_GT(test, ret, 0);
>
> info = &conn->display_info;
> KUNIT_ASSERT_FALSE(test, info->is_hdmi);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
> @@ -958,17 +958,17 @@ static void drm_test_check_tmds_char_rate_rgb_8bpc(struct kunit *test)
> ret = set_connector_edid(test, conn,
> test_edid_hdmi_1080p_rgb_max_200mhz,
> ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_200mhz));
> KUNIT_ASSERT_GT(test, ret, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
> KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
> @@ -1005,17 +1005,17 @@ static void drm_test_check_tmds_char_rate_rgb_10bpc(struct kunit *test)
> ret = set_connector_edid(test, conn,
> test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz,
> ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz));
> KUNIT_ASSERT_GT(test, ret, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
> KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
> @@ -1052,17 +1052,17 @@ static void drm_test_check_tmds_char_rate_rgb_12bpc(struct kunit *test)
> ret = set_connector_edid(test, conn,
> test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz,
> ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz));
> KUNIT_ASSERT_GT(test, ret, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
> KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
> @@ -1099,16 +1099,16 @@ static void drm_test_check_hdmi_funcs_reject_rate(struct kunit *test)
>
> drm = &priv->drm;
> crtc = priv->crtc;
> conn = &priv->connector;
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_ASSERT_EQ(test, ret, 0);
>
> /* You shouldn't be doing that at home. */
> conn->hdmi.funcs = &reject_connector_hdmi_funcs;
> @@ -1164,23 +1164,23 @@ static void drm_test_check_max_tmds_rate_bpc_fallback(struct kunit *test)
>
> info = &conn->display_info;
> KUNIT_ASSERT_TRUE(test, info->is_hdmi);
> KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
> KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
>
> rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_RGB);
> KUNIT_ASSERT_GT(test, rate, info->max_tmds_clock * 1000);
>
> rate = drm_hdmi_compute_mode_clock(preferred, 10, HDMI_COLORSPACE_RGB);
> KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_EXPECT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
> @@ -1233,13 +1233,10 @@ static void drm_test_check_max_tmds_rate_format_fallback(struct kunit *test)
>
> info = &conn->display_info;
> KUNIT_ASSERT_TRUE(test, info->is_hdmi);
> KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
> KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
>
> rate = drm_hdmi_compute_mode_clock(preferred, 10, HDMI_COLORSPACE_RGB);
> @@ -1249,10 +1246,13 @@ static void drm_test_check_max_tmds_rate_format_fallback(struct kunit *test)
> KUNIT_ASSERT_GT(test, rate, info->max_tmds_clock * 1000);
>
> rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_YUV422);
> KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_EXPECT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
> @@ -1295,13 +1295,10 @@ static void drm_test_check_output_bpc_format_vic_1(struct kunit *test)
>
> info = &conn->display_info;
> KUNIT_ASSERT_TRUE(test, info->is_hdmi);
> KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> mode = drm_kunit_display_mode_from_cea_vic(test, drm, 1);
> KUNIT_ASSERT_NOT_NULL(test, mode);
>
> /*
> * NOTE: We can't use drm_hdmi_compute_mode_clock()
> @@ -1311,10 +1308,13 @@ static void drm_test_check_output_bpc_format_vic_1(struct kunit *test)
> * Thus, we have to calculate the rate by hand.
> */
> rate = mode->clock * 1500;
> KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> crtc = priv->crtc;
> ret = light_up_connector(test, drm, crtc, conn, mode, ctx);
> KUNIT_EXPECT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> @@ -1356,13 +1356,10 @@ static void drm_test_check_output_bpc_format_driver_rgb_only(struct kunit *test)
>
> info = &conn->display_info;
> KUNIT_ASSERT_TRUE(test, info->is_hdmi);
> KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> /*
> * We're making sure that YUV422 would be the preferred option
> @@ -1377,10 +1374,13 @@ static void drm_test_check_output_bpc_format_driver_rgb_only(struct kunit *test)
> KUNIT_ASSERT_GT(test, rate, info->max_tmds_clock * 1000);
>
> rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_YUV422);
> KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_EXPECT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
> @@ -1423,13 +1423,10 @@ static void drm_test_check_output_bpc_format_display_rgb_only(struct kunit *test
>
> info = &conn->display_info;
> KUNIT_ASSERT_TRUE(test, info->is_hdmi);
> KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> /*
> * We're making sure that YUV422 would be the preferred option
> @@ -1444,10 +1441,13 @@ static void drm_test_check_output_bpc_format_display_rgb_only(struct kunit *test
> KUNIT_ASSERT_GT(test, rate, info->max_tmds_clock * 1000);
>
> rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_YUV422);
> KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_EXPECT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
> @@ -1489,23 +1489,23 @@ static void drm_test_check_output_bpc_format_driver_8bpc_only(struct kunit *test
>
> info = &conn->display_info;
> KUNIT_ASSERT_TRUE(test, info->is_hdmi);
> KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> /*
> * We're making sure that we have headroom on the TMDS character
> * clock to actually use 12bpc.
> */
> rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_RGB);
> KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_EXPECT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
> @@ -1549,23 +1549,23 @@ static void drm_test_check_output_bpc_format_display_8bpc_only(struct kunit *tes
>
> info = &conn->display_info;
> KUNIT_ASSERT_TRUE(test, info->is_hdmi);
> KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
>
> - ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> -
> preferred = find_preferred_mode(conn);
> KUNIT_ASSERT_NOT_NULL(test, preferred);
>
> /*
> * We're making sure that we have headroom on the TMDS character
> * clock to actually use 12bpc.
> */
> rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_RGB);
> KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
>
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
> KUNIT_EXPECT_EQ(test, ret, 0);
>
> conn_state = conn->state;
> KUNIT_ASSERT_NOT_NULL(test, conn_state);
>
> --
> 2.47.1
>

--
Simona Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

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