Commit 4ba115b1 authored Nov 14, 2012 by Eduardo Valentin Committed by Zhang Rui Nov 22, 2012

thermal: cpu cooling: allow module builds



As thermal drivers can be built as modules and also
the thermal framework itself, building cpu cooling
only as built-in can cause linking errors. For instance:
* Generic Thermal sysfs driver
*
Generic Thermal sysfs driver (THERMAL) [M/n/y/?] m
  generic cpu cooling support (CPU_THERMAL) [N/y/?] (NEW) y

with the following drive:
CONFIG_OMAP_BANDGAP=m

generates:
ERROR: "cpufreq_cooling_unregister" [drivers/staging/omap-thermal/omap-thermal.ko] undefined!
ERROR: "cpufreq_cooling_register" [drivers/staging/omap-thermal/omap-thermal.ko] undefined!

This patch changes cpu cooling driver to allow it
to be built as module.

Reported-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

parent 3778ff5c

drivers/thermal/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -67,7 +67,7 @@ config USER_SPACE
		Enable this to let the user space manage the platform thermals.

		config CPU_THERMAL
		bool "generic cpu cooling support"
		tristate "generic cpu cooling support"
		depends on CPU_FREQ
		select CPU_FREQ_TABLE
		help

include/linux/cpu_cooling.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -29,7 +29,7 @@
		#define CPUFREQ_COOLING_START 0
		#define CPUFREQ_COOLING_STOP 1

		#ifdef CONFIG_CPU_THERMAL
		#if defined(CONFIG_CPU_THERMAL) \|\| defined(CONFIG_CPU_THERMAL_MODULE)
		/**
		* cpufreq_cooling_register - function to create cpufreq cooling device.
		* @clip_cpus: cpumask of cpus where the frequency constraints will happen

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