From 6e08e0fa4ba16546fdbb2cdcc4ee6483bd0a6956 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Mon, 17 Jan 2022 16:43:52 +0100 Subject: [PATCH] clk: Add clk_drop_range In order to reset the range on a clock, we need to call clk_set_rate_range with a minimum of 0 and a maximum of ULONG_MAX. Since it's fairly inconvenient, let's introduce a clk_drop_range() function that will do just this. Suggested-by: Stephen Boyd Signed-off-by: Maxime Ripard --- drivers/clk/clk_test.c | 4 ++-- include/linux/clk.h | 11 +++++++++++ 2 files changed, 13 insertions(+), 2 deletions(-) --- a/drivers/clk/clk_test.c +++ b/drivers/clk/clk_test.c @@ -645,7 +645,7 @@ static void clk_range_test_multiple_set_ KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_1); KUNIT_ASSERT_EQ(test, - clk_set_rate_range(user2, 0, ULONG_MAX), + clk_drop_range(user2), 0); rate = clk_get_rate(clk); @@ -762,7 +762,7 @@ static void clk_range_test_multiple_set_ KUNIT_EXPECT_EQ(test, rate, DUMMY_CLOCK_RATE_2); KUNIT_ASSERT_EQ(test, - clk_set_rate_range(user2, 0, ULONG_MAX), + clk_drop_range(user2), 0); rate = clk_get_rate(clk); --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -1096,6 +1096,17 @@ static inline void clk_bulk_disable_unpr } /** + * clk_drop_range - Reset any range set on that clock + * @clk: clock source + * + * Returns success (0) or negative errno. + */ +static inline int clk_drop_range(struct clk *clk) +{ + return clk_set_rate_range(clk, 0, ULONG_MAX); +} + +/** * clk_get_optional - lookup and obtain a reference to an optional clock * producer. * @dev: device for clock "consumer"