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| author | Amit Kucheria <amit.kucheria@linaro.org> | 2019-01-29 10:25:07 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-01-29 11:46:31 +0100 |
| commit | afa1f2ab43d48d0e1fa1bda524a0cf53e4cd6c87 (patch) | |
| tree | 5b2e70efe058376f7d3a50c3c4b83b27e273d00f /drivers/thermal | |
| parent | 625c85a62cb7d3c79f6e16de3cfa972033658250 (diff) | |
| download | linux-afa1f2ab43d48d0e1fa1bda524a0cf53e4cd6c87.tar.gz | |
thermal: cpu_cooling: Require thermal core to be compiled in
The CPU cooling driver (cpu_cooling.c) allows the platform's cpufreq driver to register as a cooling device and cool down the platform by throttling the CPU frequency. In order to be able to auto-register a cpufreq driver as a cooling device from the cpufreq core, we need access to code inside cpu_cooling.c which, in turn, accesses code inside thermal core. CPU_FREQ is a bool while THERMAL is tristate. In some configurations (e.g. allmodconfig), CONFIG_THERMAL ends up as a module while CONFIG_CPU_FREQ is compiled in. This leads to following error: drivers/cpufreq/cpufreq.o: In function `cpufreq_offline': cpufreq.c:(.text+0x407c): undefined reference to `cpufreq_cooling_unregister' drivers/cpufreq/cpufreq.o: In function `cpufreq_online': cpufreq.c:(.text+0x70c0): undefined reference to `of_cpufreq_cooling_register' Given that platforms using CPU_THERMAL usually want it compiled-in so it is available early in boot, make CPU_THERMAL depend on THERMAL being compiled-in instead of allowing it to be a module. As a result of this change, get rid of the ugly (!CPU_THERMAL || THERMAL) dependency in all cpufreq drivers using CPU_THERMAL. Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 30323426902e..58bb7d72dc2b 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -152,6 +152,7 @@ config CPU_THERMAL bool "generic cpu cooling support" depends on CPU_FREQ depends on THERMAL_OF + depends on THERMAL=y help This implements the generic cpu cooling mechanism through frequency reduction. An ACPI version of this already exists |