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authorStefan Assmann <sassmann@suse.de>2008-06-11 16:35:17 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-08 17:50:53 +0200
commite1d3a90846b40ad3160bf4b648d36c6badad39ac (patch)
tree3c078d2b6046d90d1045efbcefe6a76a424a6f63 /scripts/checkversion.pl
parent426b3b8d535e3e141331dc19c40f457b997c4d6d (diff)
pci, acpi: reroute PCI interrupt to legacy boot interrupt equivalent
Some chipsets (e.g. intel 6700PXH) generate a legacy INTx when the IRQ entry in the chipset's IO-APIC is masked (as, e.g. the RT kernel does during interrupt handling). On chipsets where this INTx generation cannot be disabled, we reroute the valid interrupts to their legacy equivalent to get rid of spurious interrupts that might otherwise bring down (vital) interrupt lines through spurious interrupt detection in note_interrupt(). This patch benefited from discussions with Alexander Graf, Torsten Duwe, Ihno Krumreich, Daniel Gollub, Hannes Reinecke. The conclusions we drew and the patch itself are the authors' responsibility alone. Signed-off-by: Stefan Assmann <sassmann@suse.de> Signed-off-by: Olaf Dabrunz <od@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'scripts/checkversion.pl')
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