diff options
| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2005-10-23 16:31:00 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-12-01 01:30:35 -0500 |
| commit | 05131ecc99ea9da7f45ba3058fe8a2c1d0ceeab8 (patch) | |
| tree | dec76975406874cf677d6391302f42a6da55ac38 /arch/ia64/kernel/cpufreq/Makefile | |
| parent | d2149b542382bfc206cb28485108f6470c979566 (diff) | |
[ACPI] Avoid BIOS inflicted crashes by evaluating _PDC only once
Linux invokes the AML _PDC method (Processor Driver Capabilities)
to tell the BIOS what features it can handle. While the ACPI
spec says nothing about the OS invoking _PDC multiple times,
doing so with changing bits seems to hopelessly confuse the BIOS
on multiple platforms up to and including crashing the system.
Factor out the _PDC invocation so Linux invokes it only once.
http://bugzilla.kernel.org/show_bug.cgi?id=5483
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/ia64/kernel/cpufreq/Makefile')
| -rw-r--r-- | arch/ia64/kernel/cpufreq/Makefile | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/ia64/kernel/cpufreq/Makefile b/arch/ia64/kernel/cpufreq/Makefile index f748d34c02f..642648361ed 100644 --- a/arch/ia64/kernel/cpufreq/Makefile +++ b/arch/ia64/kernel/cpufreq/Makefile @@ -1 +1,6 @@ obj-$(CONFIG_IA64_ACPI_CPUFREQ) += acpi-cpufreq.o + +ifneq ($(CONFIG_ACPI_PROCESSOR),) +obj-y += acpi-processor.o +endif + |