diff options
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 92a5426..9908ef4 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -1427,6 +1427,17 @@ static int __init force_acpi_ht(const struct dmi_system_id *d) } /* + * Don't register any I/O APIC entries for the 8254 timer IRQ. + */ +static int __init +dmi_disable_irq0_through_ioapic(const struct dmi_system_id *d) +{ + pr_notice("%s detected: disabling IRQ 0 through I/O APIC\n", d->ident); + disable_irq0_through_ioapic = 1; + return 0; +} + +/* * If your system is blacklisted here, but you find that acpi=force * works for you, please contact acpi-devel@sourceforge.net */ @@ -1593,6 +1604,32 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), }, }, + /* + * HP laptops which use a DSDT reporting as HP/SB400/10000, + * which includes some code which overrides all temperature + * trip points to 16C if the INTIN2 input of the I/O APIC + * is enabled. This input is incorrectly designated the + * ISA IRQ 0 via an interrupt source override even though + * it is wired to the output of the master 8259A and INTIN0 + * is not connected at all. Abandon any attempts to route + * IRQ 0 through the I/O APIC therefore. + */ + { + .callback = dmi_disable_irq0_through_ioapic, + .ident = "HP NX6125 laptop", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"), + }, + }, + { + .callback = dmi_disable_irq0_through_ioapic, + .ident = "HP NX6325 laptop", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"), + }, + }, {} }; |