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ACPI: Load acpi-cpufreq from processor driver automatically

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The only left over hole in automatic cpufreq driver loading was the loading
of ACPI cpufreq. This driver should be loaded when ACPI supports a _PDC
method and the CPU vendor wants to use acpi cpufreq.

Simply add a request module call to the acpi processor core driver
when this is true. This seems like the simplest solution for this.

Cc: Len Brown <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
Signed-off-by: Thomas Renninger <[email protected]>
Acked-by: H. Peter Anvin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Andi Kleen 2012-01-26 00:09:08 +01:00 • committed by Greg Kroah-Hartman
commit 9061e0e167
3 changed files with 24 additions and 0 deletions
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1
include/acpi/processor.h
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@ -224,6 +224,7 @@ struct acpi_processor_errata {
} piix4;
};
extern void acpi_processor_load_module(struct acpi_processor *pr);
extern int acpi_processor_preregister_performance(struct
acpi_processor_performance
__percpu *performance);