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x86/PCI/VMD: Use untracked irq handler

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There is no way to know which device in a VMD triggered an interrupt
without invoking every registered driver's actions. This uses the
untracked irq handler so that a less used device does not trigger
spurious interrupt.

We have been previously recommending users to enable "noirqdebug", but do
not want to force a system setting just to keep this domain functional.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Cc: Jon Derrick <jonathan.derrick@intel.com>
Link: http://lkml.kernel.org/r/1466200821-29159-2-git-send-email-keith.busch@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Keith Busch 2016-06-17 16:00:21 -06:00 committed by Thomas Gleixner
parent edd14cfebc
commit 30ce035038
1 changed files with 1 additions and 1 deletions
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2
arch/x86/pci/vmd.c
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@ -195,7 +195,7 @@ static int vmd_msi_init(struct irq_domain *domain, struct msi_domain_info *info,
vmdirq->virq = virq;
irq_domain_set_info(domain, virq, vmdirq->irq->vmd_vector, info->chip,
vmdirq, handle_simple_irq, vmd, NULL);
vmdirq, handle_untracked_irq, vmd, NULL);
return 0;
}