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| author | Paul Mundt <lethal@linux-sh.org> | 2010-08-04 11:56:17 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-08-04 11:56:17 +0900 |
| commit | 701ec7a7b04a62c74ab1b83b59a3fd35c0ba5fdb (patch) | |
| tree | c07aa954f48ec45c422641052d46008697a4a6b1 /arch/x86/kernel/acpi/cstate.c | |
| parent | 285eba57db7bd7d7c3c5929fb8621fdcaaea1b00 (diff) | |
| parent | 3a09b1be53d23df780a0cd0e4087a05e2ca4a00c (diff) | |
| download | blackbird-op-linux-701ec7a7b04a62c74ab1b83b59a3fd35c0ba5fdb.tar.gz blackbird-op-linux-701ec7a7b04a62c74ab1b83b59a3fd35c0ba5fdb.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
arch/arm/configs/ap4evb_defconfig
arch/arm/configs/g3evm_defconfig
arch/arm/configs/g4evm_defconfig
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/x86/kernel/acpi/cstate.c')
| -rw-r--r-- | arch/x86/kernel/acpi/cstate.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c index 2e837f5080fe..fb7a5f052e2b 100644 --- a/arch/x86/kernel/acpi/cstate.c +++ b/arch/x86/kernel/acpi/cstate.c @@ -145,6 +145,15 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu, percpu_entry->states[cx->index].eax = cx->address; percpu_entry->states[cx->index].ecx = MWAIT_ECX_INTERRUPT_BREAK; } + + /* + * For _CST FFH on Intel, if GAS.access_size bit 1 is cleared, + * then we should skip checking BM_STS for this C-state. + * ref: "Intel Processor Vendor-Specific ACPI Interface Specification" + */ + if ((c->x86_vendor == X86_VENDOR_INTEL) && !(reg->access_size & 0x2)) + cx->bm_sts_skip = 1; + return retval; } EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe); |
