| commit | 7d60e8ab0d5507229dfbdf456501cc378610fa01 | |
| author | Shaohua Li <shaohua.li@intel.com> | |
| Tue, 19 May 2009 08:09:54 +0000 (19 16:09 +0800) | ||
| committer | Len Brown <len.brown@intel.com> | |
| Wed, 27 May 2009 03:45:33 +0000 (26 23:45 -0400) | ||
| tree | 008fe5442f841fd555b7fa43253c166f2b5c8099 | treesnapshot (tar.gz zip) |
| parent | 87ad57bacb25c3f24c54f142ef445f68277705f0 | commitdiff |
cpuidle: fix AMD C1E suspend hang
When AMD C1E is enabled, local APIC timer will stop even in C1. To avoid
suspend/resume hang, this patch removes C1 and replace it with a cpu_relax() in
suspend/resume path. This hasn't any impact in runtime path.
http://bugzilla.kernel.org/show_bug.cgi?id=13233
[ impact: avoid suspend/resume hang in AMD CPU with C1E enabled ]
Tested-by: Dmitry Lyzhyn <thisistempbox@yahoo.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
When AMD C1E is enabled, local APIC timer will stop even in C1. To avoid
suspend/resume hang, this patch removes C1 and replace it with a cpu_relax() in
suspend/resume path. This hasn't any impact in runtime path.
http://bugzilla.kernel.org/show_bug.cgi?id=13233
[ impact: avoid suspend/resume hang in AMD CPU with C1E enabled ]
Tested-by: Dmitry Lyzhyn <thisistempbox@yahoo.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| drivers/acpi/processor_idle.c | diffblobblamehistory |