Re: [patch] PCI: disable MSI on more ATI NorthBridges

[Jeff Garzik]

Daniel Barkalow wrote:
> I have a device that supports MSI and INTX-disable, and, with MSI on (and 
> delivering interrupts successfully) also sends legacy interrupts (on 
> the IRQ that is no longer associated with the device) unless INTX is 
> disabled. Without the intx_disable(), the kernel disables the IRQ 
> entirely and breaks a random other device in my system.


That sort of behavior is an example of why I wrote pci_intx() in the 
first place, and employed it by default throughout the ATA drivers 
(before it migrated into PCI core).

	Jeff


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