From: Stefan Assmann Date: Wed, 11 Jun 2008 14:35:17 +0000 (+0200) Subject: pci, acpi: reroute PCI interrupt to legacy boot interrupt equivalent X-Git-Tag: v2.6.29-rc1~587^2~4^21~9 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1d3a90846b40ad3160bf4b648d36c6badad39ac;p=pandora-kernel.git 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 Signed-off-by: Olaf Dabrunz Signed-off-by: Ingo Molnar --- Reading git-diff-tree failed