diff options
Diffstat (limited to 'arch/i386/kernel/acpi/earlyquirk.c')
| -rw-r--r-- | arch/i386/kernel/acpi/earlyquirk.c | 50 |
1 files changed, 30 insertions, 20 deletions
diff --git a/arch/i386/kernel/acpi/earlyquirk.c b/arch/i386/kernel/acpi/earlyquirk.c index 726a5ca4b16..1ae2aeeda18 100644 --- a/arch/i386/kernel/acpi/earlyquirk.c +++ b/arch/i386/kernel/acpi/earlyquirk.c @@ -7,45 +7,55 @@ #include <linux/pci.h> #include <asm/pci-direct.h> #include <asm/acpi.h> +#include <asm/apic.h> -static int __init check_bridge(int vendor, int device) +static int __init check_bridge(int vendor, int device) { /* According to Nvidia all timer overrides are bogus. Just ignore them all. */ - if (vendor == PCI_VENDOR_ID_NVIDIA) { - acpi_skip_timer_override = 1; + if (vendor == PCI_VENDOR_ID_NVIDIA) { + acpi_skip_timer_override = 1; } +#ifdef CONFIG_X86_LOCAL_APIC + /* + * ATI IXP chipsets get double timer interrupts. + * For now just do this for all ATI chipsets. + * FIXME: this needs to be checked for the non ACPI case too. + */ + if (vendor == PCI_VENDOR_ID_ATI) + disable_timer_pin_1 = 1; +#endif return 0; } - -void __init check_acpi_pci(void) -{ - int num,slot,func; + +void __init check_acpi_pci(void) +{ + int num, slot, func; /* Assume the machine supports type 1. If not it will always read ffffffff and should not have any side effect. */ /* Poor man's PCI discovery */ - for (num = 0; num < 32; num++) { - for (slot = 0; slot < 32; slot++) { - for (func = 0; func < 8; func++) { + for (num = 0; num < 32; num++) { + for (slot = 0; slot < 32; slot++) { + for (func = 0; func < 8; func++) { u32 class; u32 vendor; - class = read_pci_config(num,slot,func, + class = read_pci_config(num, slot, func, PCI_CLASS_REVISION); if (class == 0xffffffff) - break; + break; if ((class >> 16) != PCI_CLASS_BRIDGE_PCI) - continue; - - vendor = read_pci_config(num, slot, func, + continue; + + vendor = read_pci_config(num, slot, func, PCI_VENDOR_ID); - - if (check_bridge(vendor&0xffff, vendor >> 16)) - return; - } - + + if (check_bridge(vendor & 0xffff, vendor >> 16)) + return; + } + } } } |