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authorMatthew Garrett <mjg59@srcf.ucam.org>2008-07-01 01:12:06 +0100
committerIngo Molnar <mingo@elte.hu>2008-07-08 11:10:41 +0200
commit9340e1ccdf7b9b22a2be7f51cd74e8b5e11961bf (patch)
treebecdda013a47f66a54e4c44cbb7eaff6b5471a41 /arch/x86/pci/numa.c
parent471694ea6c6ccdf7131354f1d698d4d83a605293 (diff)
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x86, ioapic, acpi quirk: disable IRQ 0 through I/O APIC for some HP systems
Some HP laptops have a problem with their 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. So far two models have been identified, namely nx6125 and nx6325. Use a knob provided by the I/O APIC interrupt registration code to abandon any attempts to route IRQ 0 through the I/O APIC for these systems. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: Len Brown <lenb@kernel.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/pci/numa.c')
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