Re: [PATCH] x86 PCI: Do not use interrupt links for devices using MSI-X

[Ingo Molnar <mingo@elte.hu>]

* Rafael J. Wysocki <rjw@sisk.pl> wrote:

> From: Rafael J. Wysocki <rjw@sisk.pl>
> 
> pcibios_enable_device() and pcibios_disable_device() don't handle
> IRQs for devices that have MSI enabled and it should tread the

s/tread/treat

> devices with MSI-X enabled in the same way.
> 
> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
> ---
>  arch/x86/pci/common.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

looks good - Jesse, what do you think?

Rafael, i'm curious is this in response to some regression/bug? Did some 
box or driver get confused by us enabling/disabling the GSI? Some IRQ 
flood perhaps?

btw., there's a small observation:

> +     if (!dev->msi_enabled && !dev->msix_enabled)

maybe a "pci_has_gsi_irq()" wrapper would make these checks cleaner and 
would make things more robust, should there be any new IRQ delivery method 
be introduced in the future?

	Ingo