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| author | Alexey Starikovskiy <aystarik@gmail.com> | 2007-11-26 20:42:19 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2007-11-26 20:42:19 +0100 |
| commit | c1c306344669ca40255e36192b101060ffbb1271 (patch) | |
| tree | 292c7936d91b8ed2febb3e2902de41d0e6c84bca /drivers/acpi | |
| parent | d4d25deca49ec2527a634557bf5a6cf449f85deb (diff) | |
| download | linux-c1c306344669ca40255e36192b101060ffbb1271.tar.gz linux-c1c306344669ca40255e36192b101060ffbb1271.tar.bz2 linux-c1c306344669ca40255e36192b101060ffbb1271.zip | |
ACPI: Set max_cstate to 1 for early Opterons.
AMD Opteron processors before CG revision don't like C-states > 1.
This solves the long standing bugzilla #5303 and probably some more
on affected machines:
http://bugzilla.kernel.org/show_bug.cgi?id=5303
[ tglx@linutronix.de: reworked the patch so it does not wreck ia64 ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index f996d0e37689..b52109bd06d2 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -1658,6 +1658,7 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr, if (!first_run) { dmi_check_system(processor_power_dmi_table); + max_cstate = acpi_processor_cstate_check(max_cstate); if (max_cstate < ACPI_C_STATES_MAX) printk(KERN_NOTICE "ACPI: processor limited to max C-state %d\n", |