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SubjectRe: Disable INTx when enabling MSI
On Thu, Dec 07, 2006 at 05:31:33PM -0500, Daniel Barkalow wrote:
> Some device manufacturers seem to think it's the OS's responsibility to
> disable legacy interrupt delivery when using MSI. If the driver doesn't
> handle it (which they generally don't), and the device isn't PCI-Express,
> a steady stream of legacy interrupts will be delivered in addition to the
> MSI ones, eventually leading to the legacy IRQ getting disabled, which
> kills any device that shares it.
>
> Jeff proposed a patch in http://lkml.org/lkml/2006/11/21/332 when Linus
> wanted to do it in the PCI layer, but nobody seems to have told the actual
> PCI maintainer.

Care to take Jeff's proposed patch, verify that it works and forward it
on to me?

thanks,

greg k-h
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