drm/tests: hdmi: Fix recursive locking

[ Upstream commit 5d14c08a47460e8eedf0185a28b116420ea7f29d ]

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.

Reviewed-by: Simona Vetter <simona.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20250129-test-kunit-v2-4-fe59c43805d5@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Maxime Ripard
2025-01-29 15:21:56 +01:00
committed by Greg Kroah-Hartman
parent b0f9bb6786
commit 02a12760d7
@@ -262,12 +262,12 @@ static void drm_test_check_broadcast_rgb_crtc_mode_changed(struct kunit *test)
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);
@@ -326,12 +326,12 @@ static void drm_test_check_broadcast_rgb_crtc_mode_not_changed(struct kunit *tes
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);
@@ -391,13 +391,13 @@ static void drm_test_check_broadcast_rgb_auto_cea_mode(struct kunit *test)
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);
@@ -502,13 +502,13 @@ static void drm_test_check_broadcast_rgb_full_cea_mode(struct kunit *test)
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);
@@ -617,13 +617,13 @@ static void drm_test_check_broadcast_rgb_limited_cea_mode(struct kunit *test)
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);
@@ -737,12 +737,12 @@ static void drm_test_check_output_bpc_crtc_mode_changed(struct kunit *test)
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);
@@ -811,12 +811,12 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
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);
@@ -885,12 +885,12 @@ static void drm_test_check_output_bpc_dvi(struct kunit *test)
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);
@@ -929,13 +929,13 @@ static void drm_test_check_tmds_char_rate_rgb_8bpc(struct kunit *test)
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);
@@ -976,13 +976,13 @@ static void drm_test_check_tmds_char_rate_rgb_10bpc(struct kunit *test)
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);
@@ -1023,13 +1023,13 @@ static void drm_test_check_tmds_char_rate_rgb_12bpc(struct kunit *test)
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);
@@ -1070,12 +1070,12 @@ static void drm_test_check_hdmi_funcs_reject_rate(struct kunit *test)
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);
@@ -1135,9 +1135,6 @@ static void drm_test_check_max_tmds_rate_bpc_fallback(struct kunit *test)
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);
@@ -1148,6 +1145,9 @@ static void drm_test_check_max_tmds_rate_bpc_fallback(struct kunit *test)
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);
@@ -1204,9 +1204,6 @@ static void drm_test_check_max_tmds_rate_format_fallback(struct kunit *test)
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);
@@ -1220,6 +1217,9 @@ static void drm_test_check_max_tmds_rate_format_fallback(struct kunit *test)
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);
@@ -1266,9 +1266,6 @@ static void drm_test_check_output_bpc_format_vic_1(struct kunit *test)
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);
@@ -1282,6 +1279,9 @@ static void drm_test_check_output_bpc_format_vic_1(struct kunit *test)
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);
@@ -1327,9 +1327,6 @@ static void drm_test_check_output_bpc_format_driver_rgb_only(struct kunit *test)
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);
@@ -1348,6 +1345,9 @@ static void drm_test_check_output_bpc_format_driver_rgb_only(struct kunit *test)
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);
@@ -1394,9 +1394,6 @@ static void drm_test_check_output_bpc_format_display_rgb_only(struct kunit *test
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);
@@ -1415,6 +1412,9 @@ static void drm_test_check_output_bpc_format_display_rgb_only(struct kunit *test
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);
@@ -1460,9 +1460,6 @@ static void drm_test_check_output_bpc_format_driver_8bpc_only(struct kunit *test
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);
@@ -1473,6 +1470,9 @@ static void drm_test_check_output_bpc_format_driver_8bpc_only(struct kunit *test
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);
@@ -1520,9 +1520,6 @@ static void drm_test_check_output_bpc_format_display_8bpc_only(struct kunit *tes
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);
@@ -1533,6 +1530,9 @@ static void drm_test_check_output_bpc_format_display_8bpc_only(struct kunit *tes
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);