diff options
| author | Paul Mackerras <paulus@samba.org> | 2006-02-24 14:05:47 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-02-24 14:05:47 +1100 |
| commit | a00428f5b149e36b8225b2a0812742a6dfb07b8c (patch) | |
| tree | a78869cd67cf78a0eb091fb0ea5d397734bd6738 /arch/x86_64/kernel/io_apic.c | |
| parent | 774fee58c465ea1c7e9775e347ec307bcf2deeb3 (diff) | |
| parent | fb5c594c2acc441f0d2d8f457484a0e0e9285db3 (diff) | |
| download | linux-a00428f5b149e36b8225b2a0812742a6dfb07b8c.tar.gz | |
Merge ../powerpc-merge
Diffstat (limited to 'arch/x86_64/kernel/io_apic.c')
| -rw-r--r-- | arch/x86_64/kernel/io_apic.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index 4282d72b2a260e..2585c1d92b26bd 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -30,6 +30,9 @@ #include <linux/mc146818rtc.h> #include <linux/acpi.h> #include <linux/sysdev.h> +#ifdef CONFIG_ACPI +#include <acpi/acpi_bus.h> +#endif #include <asm/io.h> #include <asm/smp.h> @@ -260,6 +263,8 @@ __setup("apic", enable_ioapic_setup); And another hack to disable the IOMMU on VIA chipsets. + ... and others. Really should move this somewhere else. + Kludge-O-Rama. */ void __init check_ioapic(void) { @@ -307,6 +312,17 @@ void __init check_ioapic(void) case PCI_VENDOR_ID_ATI: if (apic_runs_main_timer != 0) break; +#ifdef CONFIG_ACPI + /* Don't do this for laptops right + right now because their timer + doesn't necessarily tick in C2/3 */ + if (acpi_fadt.revision >= 3 && + (acpi_fadt.plvl2_lat + acpi_fadt.plvl3_lat) < 1100) { + printk(KERN_INFO +"ATI board detected, but seems to be a laptop. Timer might be shakey, sorry\n"); + break; + } +#endif printk(KERN_INFO "ATI board detected. Using APIC/PM timer.\n"); apic_runs_main_timer = 1; |