commit bfb53ccf1c734b1907df7189eef4c08489827951
author Len Brown <len.brown@intel.com> Wed Feb 16 01:32:48 2011 -0500
committer Len Brown <len.brown@intel.com> Thu Feb 17 17:08:48 2011 -0500
tree 7d93bac0a87b89c9e7f87c4bad2e43fcef6725f1
parent 14796fca2bd22acc73dd0887248d003b0f441d08

intel_idle: disable Atom/Lincroft HW C-state auto-demotion

Just as we had to disable auto-demotion for NHM/WSM,
we need to do the same for Atom (Lincroft version).

In particular, auto-demotion will prevent Lincroft
from entering the S0i3 idle power saving state.

https://bugzilla.kernel.org/show_bug.cgi?id=25252

Signed-off-by: Len Brown <len.brown@intel.com>

arch/x86/include/asm/msr-index.h

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index b75eeab..43a18c7 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -39,6 +39,7 @@
 #define MSR_NHM_SNB_PKG_CST_CFG_CTL	0x000000e2
 #define NHM_C3_AUTO_DEMOTE		(1UL << 25)
 #define NHM_C1_AUTO_DEMOTE		(1UL << 26)
+#define ATM_LNC_C6_AUTO_DEMOTE		(1UL << 25)
 
 #define MSR_MTRRcap			0x000000fe
 #define MSR_IA32_BBL_CR_CTL		0x00000119