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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> |
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