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| author | Jeff Garzik <jgarzik@pobox.com> | 2006-02-20 02:16:23 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2006-02-20 02:16:23 -0500 |
| commit | 5b2ffed906a3ebd4e52a5bbef06b99a517c53e4b (patch) | |
| tree | 2f900f89d93db6b0822d8bdf4f49851c581c12a6 /arch/x86_64/kernel/io_apic.c | |
| parent | f1b318793dcd2d9ff6b5ac06e7762098fa079cee (diff) | |
| parent | bd71c2b17468a2531fb4c81ec1d73520845e97e1 (diff) | |
Merge branch 'master'
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 4282d72b2a2..2585c1d92b2 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; |