From: Zhao Yakui <yakui.zhao@intel.com>
Date: Tue, 17 Jun 2008 06:39:59 +0000 (+0800)
Subject: ACPI: Disable the C2C3_FFH access mode HW has no MWAIT support
X-Git-Tag: v2.6.27-rc1~1050^2~37
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5b53496a5ad79e91052f72761a7c5516b069bc99;p=pandora-kernel.git

ACPI: Disable the C2C3_FFH access mode HW has no MWAIT support

991528d7348667924176f3e29addea0675298944
(ACPI: Processor native C-states using MWAIT)
started passing C2C3_FFH to _PDC to tell the BIOS
that Linux supports MWAIT for deep C-states.

However, we should first double check with the hardware
that it actually supports MWAIT before potentially exposing
a BIOS bug of an MWAIT _CST on HW that doesn't support MWAIT.

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: Andi Kleen <ak@linux.intel.com>
---

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