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Subject[14/82] intel_idle: do not use the LAPIC timer for ATOM C2
2.6.35-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Len Brown <len.brown@intel.com>

commit c25d29952b2a8c9aaf00e081c9162a0e383030cd upstream.

If we use the LAPIC timer during ATOM C2 on
some nvidia chisets, the system stalls.

https://bugzilla.kernel.org/show_bug.cgi?id=21032

Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Tom Gundersen <teg@jklm.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/idle/intel_idle.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -308,7 +308,7 @@ static int intel_idle_probe(void)
break;

case 0x1C: /* 28 - Atom Processor */
- lapic_timer_reliable_states = (1 << 2) | (1 << 1); /* C2, C1 */
+ lapic_timer_reliable_states = (1 << 1); /* C1 */
cpuidle_state_table = atom_cstates;
choose_substate = choose_zero_substate;
break;



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