ACPI: Backport missing part for T-State MSR support

Part of below kernel commit was missed while packporting T-State
support.

commit f79f06ab9f86d7203006d2ec8992ac80df36a34e
Author: Zhao Yakui <yakui.zhao@intel.com>
Date:   Thu Nov 15 17:06:36 2007 +0800

    ACPI: Enable MSR (FixedHW) support for T-States

    Add throttling control via MSR when T-states uses
    the FixHW Control Status registers.

    Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
    Signed-off-by: Li Shaohua <shaohua.li@intel.com>
    Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Wei Gang <gang.wei@intel.com>

diff --git a/arch/i386/kernel/acpi/processor.c b/arch/i386/kernel/acpi/processor.c
index f59305bedd73ad53c4bde9ac3b9fd55b57e43443..d2f983ce22eaa33adf30a33ba99a9d78a79a4023 100644 (file)
--- a/arch/i386/kernel/acpi/processor.c
+++ b/arch/i386/kernel/acpi/processor.c
@@ -49,6 +49,9 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
        if (cpu_has(c, X86_FEATURE_EST))
                buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
 
+       if (cpu_has(c, X86_FEATURE_ACPI))
+               buf[2] |= ACPI_PDC_T_FFH;
+
        obj->type = ACPI_TYPE_BUFFER;
        obj->buffer.length = 12;
        obj->buffer.pointer = (u8 *) buf;