drm/tests: Drop drm_kunit_helper_acquire_ctx_alloc()

lockdep complains when a lock is released in a separate thread the
lock is taken in, and it turns out that kunit does run its actions in a
separate thread than the test ran in.

This means that drm_kunit_helper_acquire_ctx_alloc() just cannot work as
it's supposed to, so let's just get rid of it.

Suggested-by: Simona Vetter <simona.vetter@ffwll.ch>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250220132537.2834168-1-mripard@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>

1 files changed, 27 insertions, 19 deletions

diff --git a/drivers/gpu/drm/vc4/tests/vc4_test_pv_muxing.c b/drivers/gpu/drm/vc4/tests/vc4_test_pv_muxing.c
index 40a05869a50e..992e8f5c5c6e 100644
--- a/drivers/gpu/drm/vc4/tests/vc4_test_pv_muxing.c
+++ b/drivers/gpu/drm/vc4/tests/vc4_test_pv_muxing.c
@@ -724,7 +724,7 @@ static void drm_vc4_test_pv_muxing_invalid(struct kunit *test)
 static int vc4_pv_muxing_test_init(struct kunit *test)
 {
 	const struct pv_muxing_param *params = test->param_value;
-	struct drm_modeset_acquire_ctx *ctx;
+	struct drm_modeset_acquire_ctx ctx;
 	struct pv_muxing_priv *priv;
 	struct drm_device *drm;
 	struct vc4_dev *vc4;
@@ -737,13 +737,15 @@ static int vc4_pv_muxing_test_init(struct kunit *test)
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4);
 	priv->vc4 = vc4;
 
-	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+	drm_modeset_acquire_init(&ctx, 0);
 
 	drm = &vc4->base;
-	priv->state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+	priv->state = drm_kunit_helper_atomic_state_alloc(test, drm, &ctx);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->state);
 
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
+
 	return 0;
 }
 
@@ -782,7 +784,7 @@ static struct kunit_suite vc5_pv_muxing_test_suite = {
  */
 static void drm_test_vc5_pv_muxing_bugs_subsequent_crtc_enable(struct kunit *test)
 {
-	struct drm_modeset_acquire_ctx *ctx;
+	struct drm_modeset_acquire_ctx ctx;
 	struct drm_atomic_state *state;
 	struct vc4_crtc_state *new_vc4_crtc_state;
 	struct vc4_hvs_state *new_hvs_state;
@@ -795,11 +797,10 @@ static void drm_test_vc5_pv_muxing_bugs_subsequent_crtc_enable(struct kunit *tes
 	vc4 = vc5_mock_device(test);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4);
 
-	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+	drm_modeset_acquire_init(&ctx, 0);
 
 	drm = &vc4->base;
-	state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+	state = drm_kunit_helper_atomic_state_alloc(test, drm, &ctx);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
 
 	ret = vc4_mock_atomic_add_output(test, state, VC4_ENCODER_TYPE_HDMI0);
@@ -822,7 +823,7 @@ static void drm_test_vc5_pv_muxing_bugs_subsequent_crtc_enable(struct kunit *tes
 	ret = drm_atomic_helper_swap_state(state, false);
 	KUNIT_ASSERT_EQ(test, ret, 0);
 
-	state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+	state = drm_kunit_helper_atomic_state_alloc(test, drm, &ctx);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
 
 	ret = vc4_mock_atomic_add_output(test, state, VC4_ENCODER_TYPE_HDMI1);
@@ -843,6 +844,9 @@ static void drm_test_vc5_pv_muxing_bugs_subsequent_crtc_enable(struct kunit *tes
 	KUNIT_ASSERT_TRUE(test, new_hvs_state->fifo_state[hdmi1_channel].in_use);
 
 	KUNIT_EXPECT_NE(test, hdmi0_channel, hdmi1_channel);
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
 }
 
 /*
@@ -854,7 +858,7 @@ static void drm_test_vc5_pv_muxing_bugs_subsequent_crtc_enable(struct kunit *tes
  */
 static void drm_test_vc5_pv_muxing_bugs_stable_fifo(struct kunit *test)
 {
-	struct drm_modeset_acquire_ctx *ctx;
+	struct drm_modeset_acquire_ctx ctx;
 	struct drm_atomic_state *state;
 	struct vc4_crtc_state *new_vc4_crtc_state;
 	struct vc4_hvs_state *new_hvs_state;
@@ -867,11 +871,10 @@ static void drm_test_vc5_pv_muxing_bugs_stable_fifo(struct kunit *test)
 	vc4 = vc5_mock_device(test);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4);
 
-	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+	drm_modeset_acquire_init(&ctx, 0);
 
 	drm = &vc4->base;
-	state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+	state = drm_kunit_helper_atomic_state_alloc(test, drm, &ctx);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
 
 	ret = vc4_mock_atomic_add_output(test, state, VC4_ENCODER_TYPE_HDMI0);
@@ -905,7 +908,7 @@ static void drm_test_vc5_pv_muxing_bugs_stable_fifo(struct kunit *test)
 	ret = drm_atomic_helper_swap_state(state, false);
 	KUNIT_ASSERT_EQ(test, ret, 0);
 
-	state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+	state = drm_kunit_helper_atomic_state_alloc(test, drm, &ctx);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
 
 	ret = vc4_mock_atomic_del_output(test, state, VC4_ENCODER_TYPE_HDMI0);
@@ -929,6 +932,9 @@ static void drm_test_vc5_pv_muxing_bugs_stable_fifo(struct kunit *test)
 
 		KUNIT_EXPECT_EQ(test, old_hdmi1_channel, hdmi1_channel);
 	}
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
 }
 
 /*
@@ -949,7 +955,7 @@ static void drm_test_vc5_pv_muxing_bugs_stable_fifo(struct kunit *test)
 static void
 drm_test_vc5_pv_muxing_bugs_subsequent_crtc_enable_too_many_crtc_state(struct kunit *test)
 {
-	struct drm_modeset_acquire_ctx *ctx;
+	struct drm_modeset_acquire_ctx ctx;
 	struct drm_atomic_state *state;
 	struct vc4_crtc_state *new_vc4_crtc_state;
 	struct drm_device *drm;
@@ -959,11 +965,10 @@ drm_test_vc5_pv_muxing_bugs_subsequent_crtc_enable_too_many_crtc_state(struct ku
 	vc4 = vc5_mock_device(test);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4);
 
-	ctx = drm_kunit_helper_acquire_ctx_alloc(test);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+	drm_modeset_acquire_init(&ctx, 0);
 
 	drm = &vc4->base;
-	state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+	state = drm_kunit_helper_atomic_state_alloc(test, drm, &ctx);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
 
 	ret = vc4_mock_atomic_add_output(test, state, VC4_ENCODER_TYPE_HDMI0);
@@ -975,7 +980,7 @@ drm_test_vc5_pv_muxing_bugs_subsequent_crtc_enable_too_many_crtc_state(struct ku
 	ret = drm_atomic_helper_swap_state(state, false);
 	KUNIT_ASSERT_EQ(test, ret, 0);
 
-	state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+	state = drm_kunit_helper_atomic_state_alloc(test, drm, &ctx);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
 
 	ret = vc4_mock_atomic_add_output(test, state, VC4_ENCODER_TYPE_HDMI1);
@@ -987,6 +992,9 @@ drm_test_vc5_pv_muxing_bugs_subsequent_crtc_enable_too_many_crtc_state(struct ku
 	new_vc4_crtc_state = get_vc4_crtc_state_for_encoder(test, state,
 							    VC4_ENCODER_TYPE_HDMI0);
 	KUNIT_EXPECT_NULL(test, new_vc4_crtc_state);
+
+	drm_modeset_drop_locks(&ctx);
+	drm_modeset_acquire_fini(&ctx);
 }
 
 static struct kunit_case vc5_pv_muxing_bugs_tests[] = {