diff options
| author | Alex Chiang <achiang@hp.com> | 2009-12-20 12:19:14 -0700 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-12-22 03:24:10 -0500 |
| commit | 1d9cb470a755409ce97c3376174b1e234bd20371 (patch) | |
| tree | cc0f35e02fed9b833be7bafda72b4980c4667ec9 /drivers/acpi | |
| parent | 78f1699659963fff97975df44db6d5dbe7218e55 (diff) | |
ACPI: processor: introduce arch_has_acpi_pdc
arch dependent helper function that tells us if we should attempt to
evaluate _PDC on this machine or not.
The x86 implementation assumes that the CPUs in the machine must be
homogeneous, and that you cannot mix CPUs of different vendors.
Cc: Tony Luck <tony.luck@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_pdc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c index b416c32dda04..931e735e9e37 100644 --- a/drivers/acpi/processor_pdc.c +++ b/drivers/acpi/processor_pdc.c @@ -69,6 +69,9 @@ static int acpi_processor_eval_pdc(struct acpi_processor *pr) void acpi_processor_set_pdc(struct acpi_processor *pr) { + if (arch_has_acpi_pdc() == false) + return; + arch_acpi_processor_init_pdc(pr); acpi_processor_eval_pdc(pr); arch_acpi_processor_cleanup_pdc(pr); |