ACPI: Load acpi-cpufreq from processor driver automatically

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 <lenb@kernel.org>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 610f6fb1bbc2..da57fdcc57d2 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -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);