Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "Two clk driver fixes and a unit test fix:

   - Terminate the of_device_id table in the Samsung exynosautov920 clk
     driver so that device matching logic doesn't run off the end of the
     array into other memory and break matching for any kernel with this
     driver loaded

   - Properly limit the max clk ID in the Rockchip clk driver

   - Use clk kunit helpers in the clk tests so that memory isn't leaked
     after the test concludes"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: test: Fix some memory leaks
  clk: rockchip: fix finding of maximum clock ID
  clk: samsung: Fix out-of-bound access of of_match_node()

Author: torvalds

drivers/clk/clk_test.c

@@ -473,39 +473,29 @@ 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;
 
 	ctx->parents_ctx[1].hw.init = CLK_HW_INIT_NO_PARENT("parent-1",
 							    &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;
 
 	ctx->current_parent = 0;
 	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,
 };
 
@@ -986,15 +958,15 @@ 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;
 
 	ctx->hw.init = CLK_HW_INIT("test-clk", "parent-clk",
 				   &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,
 };
 

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;

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 = {