diff --git a/drivers/clk/clk_test.c b/drivers/clk/clk_test.c
index 41fc8eba3418..aa3ddcfc00eb 100644
--- a/drivers/clk/clk_test.c
+++ b/drivers/clk/clk_test.c
@@ -473,7 +473,7 @@ clk_multiple_parents_mux_test_init(struct kunit *test)
 							    &clk_dummy_rate_ops,
 							    0);
 	ctx->parents_ctx[0].rate = DUMMY_CLOCK_RATE_1;
-	ret = clk_hw_register(NULL, &ctx->parents_ctx[0].hw);
+	ret = clk_hw_register_kunit(test, NULL, &ctx->parents_ctx[0].hw);
 	if (ret)
 		return ret;
 
@@ -481,7 +481,7 @@ clk_multiple_parents_mux_test_init(struct kunit *test)
 							    &clk_dummy_rate_ops,
 							    0);
 	ctx->parents_ctx[1].rate = DUMMY_CLOCK_RATE_2;
-	ret = clk_hw_register(NULL, &ctx->parents_ctx[1].hw);
+	ret = clk_hw_register_kunit(test, NULL, &ctx->parents_ctx[1].hw);
 	if (ret)
 		return ret;
 
@@ -489,23 +489,13 @@ clk_multiple_parents_mux_test_init(struct kunit *test)
 	ctx->hw.init = CLK_HW_INIT_PARENTS("test-mux", parents,
 					   &clk_multiple_parents_mux_ops,
 					   CLK_SET_RATE_PARENT);
-	ret = clk_hw_register(NULL, &ctx->hw);
+	ret = clk_hw_register_kunit(test, NULL, &ctx->hw);
 	if (ret)
 		return ret;
 
 	return 0;
 }
 
-static void
-clk_multiple_parents_mux_test_exit(struct kunit *test)
-{
-	struct clk_multiple_parent_ctx *ctx = test->priv;
-
-	clk_hw_unregister(&ctx->hw);
-	clk_hw_unregister(&ctx->parents_ctx[0].hw);
-	clk_hw_unregister(&ctx->parents_ctx[1].hw);
-}
-
 /*
  * Test that for a clock with multiple parents, clk_get_parent()
  * actually returns the current one.
@@ -561,18 +551,18 @@ clk_test_multiple_parents_mux_set_range_set_parent_get_rate(struct kunit *test)
 {
 	struct clk_multiple_parent_ctx *ctx = test->priv;
 	struct clk_hw *hw = &ctx->hw;
-	struct clk *clk = clk_hw_get_clk(hw, NULL);
+	struct clk *clk = clk_hw_get_clk_kunit(test, hw, NULL);
 	struct clk *parent1, *parent2;
 	unsigned long rate;
 	int ret;
 
 	kunit_skip(test, "This needs to be fixed in the core.");
 
-	parent1 = clk_hw_get_clk(&ctx->parents_ctx[0].hw, NULL);
+	parent1 = clk_hw_get_clk_kunit(test, &ctx->parents_ctx[0].hw, NULL);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent1);
 	KUNIT_ASSERT_TRUE(test, clk_is_match(clk_get_parent(clk), parent1));
 
-	parent2 = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
+	parent2 = clk_hw_get_clk_kunit(test, &ctx->parents_ctx[1].hw, NULL);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent2);
 
 	ret = clk_set_rate(parent1, DUMMY_CLOCK_RATE_1);
@@ -593,10 +583,6 @@ clk_test_multiple_parents_mux_set_range_set_parent_get_rate(struct kunit *test)
 	KUNIT_ASSERT_GT(test, rate, 0);
 	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1 - 1000);
 	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_1 + 1000);
-
-	clk_put(parent2);
-	clk_put(parent1);
-	clk_put(clk);
 }
 
 static struct kunit_case clk_multiple_parents_mux_test_cases[] = {
@@ -617,7 +603,6 @@ static struct kunit_suite
 clk_multiple_parents_mux_test_suite = {
 	.name = "clk-multiple-parents-mux-test",
 	.init = clk_multiple_parents_mux_test_init,
-	.exit = clk_multiple_parents_mux_test_exit,
 	.test_cases = clk_multiple_parents_mux_test_cases,
 };
 
@@ -637,29 +622,20 @@ clk_orphan_transparent_multiple_parent_mux_test_init(struct kunit *test)
 							    &clk_dummy_rate_ops,
 							    0);
 	ctx->parents_ctx[1].rate = DUMMY_CLOCK_INIT_RATE;
-	ret = clk_hw_register(NULL, &ctx->parents_ctx[1].hw);
+	ret = clk_hw_register_kunit(test, NULL, &ctx->parents_ctx[1].hw);
 	if (ret)
 		return ret;
 
 	ctx->hw.init = CLK_HW_INIT_PARENTS("test-orphan-mux", parents,
 					   &clk_multiple_parents_mux_ops,
 					   CLK_SET_RATE_PARENT);
-	ret = clk_hw_register(NULL, &ctx->hw);
+	ret = clk_hw_register_kunit(test, NULL, &ctx->hw);
 	if (ret)
 		return ret;
 
 	return 0;
 }
 
-static void
-clk_orphan_transparent_multiple_parent_mux_test_exit(struct kunit *test)
-{
-	struct clk_multiple_parent_ctx *ctx = test->priv;
-
-	clk_hw_unregister(&ctx->hw);
-	clk_hw_unregister(&ctx->parents_ctx[1].hw);
-}
-
 /*
  * Test that, for a mux whose current parent hasn't been registered yet and is
  * thus orphan, clk_get_parent() will return NULL.
@@ -912,7 +888,7 @@ clk_test_orphan_transparent_multiple_parent_mux_set_range_set_parent_get_rate(st
 {
 	struct clk_multiple_parent_ctx *ctx = test->priv;
 	struct clk_hw *hw = &ctx->hw;
-	struct clk *clk = clk_hw_get_clk(hw, NULL);
+	struct clk *clk = clk_hw_get_clk_kunit(test, hw, NULL);
 	struct clk *parent;
 	unsigned long rate;
 	int ret;
@@ -921,7 +897,7 @@ clk_test_orphan_transparent_multiple_parent_mux_set_range_set_parent_get_rate(st
 
 	clk_hw_set_rate_range(hw, DUMMY_CLOCK_RATE_1, DUMMY_CLOCK_RATE_2);
 
-	parent = clk_hw_get_clk(&ctx->parents_ctx[1].hw, NULL);
+	parent = clk_hw_get_clk_kunit(test, &ctx->parents_ctx[1].hw, NULL);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, parent);
 
 	ret = clk_set_parent(clk, parent);
@@ -931,9 +907,6 @@ clk_test_orphan_transparent_multiple_parent_mux_set_range_set_parent_get_rate(st
 	KUNIT_ASSERT_GT(test, rate, 0);
 	KUNIT_EXPECT_GE(test, rate, DUMMY_CLOCK_RATE_1);
 	KUNIT_EXPECT_LE(test, rate, DUMMY_CLOCK_RATE_2);
-
-	clk_put(parent);
-	clk_put(clk);
 }
 
 static struct kunit_case clk_orphan_transparent_multiple_parent_mux_test_cases[] = {
@@ -961,7 +934,6 @@ static struct kunit_case clk_orphan_transparent_multiple_parent_mux_test_cases[]
 static struct kunit_suite clk_orphan_transparent_multiple_parent_mux_test_suite = {
 	.name = "clk-orphan-transparent-multiple-parent-mux-test",
 	.init = clk_orphan_transparent_multiple_parent_mux_test_init,
-	.exit = clk_orphan_transparent_multiple_parent_mux_test_exit,
 	.test_cases = clk_orphan_transparent_multiple_parent_mux_test_cases,
 };
 
@@ -986,7 +958,7 @@ static int clk_single_parent_mux_test_init(struct kunit *test)
 				      &clk_dummy_rate_ops,
 				      0);
 
-	ret = clk_hw_register(NULL, &ctx->parent_ctx.hw);
+	ret = clk_hw_register_kunit(test, NULL, &ctx->parent_ctx.hw);
 	if (ret)
 		return ret;
 
@@ -994,7 +966,7 @@ static int clk_single_parent_mux_test_init(struct kunit *test)
 				   &clk_dummy_single_parent_ops,
 				   CLK_SET_RATE_PARENT);
 
-	ret = clk_hw_register(NULL, &ctx->hw);
+	ret = clk_hw_register_kunit(test, NULL, &ctx->hw);
 	if (ret)
 		return ret;
 
@@ -1060,7 +1032,7 @@ clk_test_single_parent_mux_set_range_disjoint_child_last(struct kunit *test)
 {
 	struct clk_single_parent_ctx *ctx = test->priv;
 	struct clk_hw *hw = &ctx->hw;
-	struct clk *clk = clk_hw_get_clk(hw, NULL);
+	struct clk *clk = clk_hw_get_clk_kunit(test, hw, NULL);
 	struct clk *parent;
 	int ret;
 
@@ -1074,8 +1046,6 @@ clk_test_single_parent_mux_set_range_disjoint_child_last(struct kunit *test)
 
 	ret = clk_set_rate_range(clk, 3000, 4000);
 	KUNIT_EXPECT_LT(test, ret, 0);
-
-	clk_put(clk);
 }
 
 /*
@@ -1092,7 +1062,7 @@ clk_test_single_parent_mux_set_range_disjoint_parent_last(struct kunit *test)
 {
 	struct clk_single_parent_ctx *ctx = test->priv;
 	struct clk_hw *hw = &ctx->hw;
-	struct clk *clk = clk_hw_get_clk(hw, NULL);
+	struct clk *clk = clk_hw_get_clk_kunit(test, hw, NULL);
 	struct clk *parent;
 	int ret;
 
@@ -1106,8 +1076,6 @@ clk_test_single_parent_mux_set_range_disjoint_parent_last(struct kunit *test)
 
 	ret = clk_set_rate_range(parent, 3000, 4000);
 	KUNIT_EXPECT_LT(test, ret, 0);
-
-	clk_put(clk);
 }
 
 /*
@@ -1238,7 +1206,6 @@ static struct kunit_suite
 clk_single_parent_mux_test_suite = {
 	.name = "clk-single-parent-mux-test",
 	.init = clk_single_parent_mux_test_init,
-	.exit = clk_single_parent_mux_test_exit,
 	.test_cases = clk_single_parent_mux_test_cases,
 };
 
diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
index 2fa7253c73b2..88629a9abc9c 100644
--- a/drivers/clk/rockchip/clk.c
+++ b/drivers/clk/rockchip/clk.c
@@ -439,7 +439,7 @@ unsigned long rockchip_clk_find_max_clk_id(struct rockchip_clk_branch *list,
 		if (list->id > max)
 			max = list->id;
 		if (list->child && list->child->id > max)
-			max = list->id;
+			max = list->child->id;
 	}
 
 	return max;
diff --git a/drivers/clk/samsung/clk-exynosautov920.c b/drivers/clk/samsung/clk-exynosautov920.c
index 7ba9748c0526..f60f0a0c598d 100644
--- a/drivers/clk/samsung/clk-exynosautov920.c
+++ b/drivers/clk/samsung/clk-exynosautov920.c
@@ -1155,6 +1155,7 @@ static const struct of_device_id exynosautov920_cmu_of_match[] = {
 		.compatible = "samsung,exynosautov920-cmu-peric0",
 		.data = &peric0_cmu_info,
 	},
+	{ }
 };
 
 static struct platform_driver exynosautov920_cmu_driver __refdata = {