From: Keith Busch <keith.busch@intel.com>
Date: Fri, 17 Jun 2016 16:00:21 -0600
Subject: x86/PCI/VMD: Use untracked irq handler
Git-commit: 30ce0350381351646ef86b64e6d3840b3869833b
Patch-mainline: v4.8-rc1
References: bsc#1006827

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>
Acked-by: Joerg Roedel <jroedel@suse.de>
---
 arch/x86/pci/vmd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/pci/vmd.c
+++ b/arch/x86/pci/vmd.c
@@ -196,7 +196,7 @@ static int vmd_msi_init(struct irq_domai
 	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;
 }
 
