Commit e81b87d2 authored Jun 28, 2016 by Krzysztof Kozlowski Committed by Stephen Boyd Jun 28, 2016

clk: Provide notifier stubs when !COMMON_CLK



The clk notifier symbols are hidden by COMMON_CLK.  However on some
platforms HAVE_CLK might be set while COMMON_CLK not which leads to
compile test build errors like:

$ make.cross ARCH=sh
   drivers/devfreq/tegra-devfreq.c: In function 'tegra_actmon_rate_notify_cb':
>> drivers/devfreq/tegra-devfreq.c:391:16: error: 'POST_RATE_CHANGE' undeclared (first use in this function)
     if (action != POST_RATE_CHANGE)
                   ^
   drivers/devfreq/tegra-devfreq.c: In function 'tegra_devfreq_probe':
>> drivers/devfreq/tegra-devfreq.c:654:8: error: implicit declaration of function 'clk_notifier_register' [-Werror=implicit-function-declaration]
     err = clk_notifier_register(tegra->emc_clock, &tegra->rate_change_nb);
           ^

Export the macros and data type declarations outside of COMMON_CLK ifdef
and provide stubs to fix the compile testing.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

parent 1a695a90

include/linux/clk.h

+14 −2

Original line number	Diff line number	Diff line
		@@ -20,8 +20,6 @@ struct device;

		struct clk;

		#ifdef CONFIG_COMMON_CLK

		/**
		* DOC: clk notifier callback types
		*
		@@ -78,6 +76,8 @@ struct clk_notifier_data {
		unsigned long new_rate;
		};

		#ifdef CONFIG_COMMON_CLK

		/**
		* clk_notifier_register: register a clock rate-change notifier callback
		* @clk: clock whose rate we are interested in
		@@ -140,6 +140,18 @@ bool clk_is_match(const struct clk p, const struct clk q);

		#else

		static inline int clk_notifier_register(struct clk *clk,
		struct notifier_block *nb)
		{
		return -ENOTSUPP;
		}

		static inline int clk_notifier_unregister(struct clk *clk,
		struct notifier_block *nb)
		{
		return -ENOTSUPP;
		}

		static inline long clk_get_accuracy(struct clk *clk)
		{
		return -ENOTSUPP;