[tip:irq/core] x86/PCI/VMD: Use untracked irq handler
From: tip-bot for Keith Busch
Date: Sat Jun 18 2016 - 04:07:54 EST
Commit-ID: 30ce0350381351646ef86b64e6d3840b3869833b
Gitweb: http://git.kernel.org/tip/30ce0350381351646ef86b64e6d3840b3869833b
Author: Keith Busch <keith.busch@xxxxxxxxx>
AuthorDate: Fri, 17 Jun 2016 16:00:21 -0600
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Sat, 18 Jun 2016 10:00:55 +0200
x86/PCI/VMD: Use untracked irq handler
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@xxxxxxxxx>
Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: linux-pci@xxxxxxxxxxxxxxx
Cc: Jon Derrick <jonathan.derrick@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1466200821-29159-2-git-send-email-keith.busch@xxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/pci/vmd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/pci/vmd.c b/arch/x86/pci/vmd.c
index 7792aba..613cac7 100644
--- a/arch/x86/pci/vmd.c
+++ b/arch/x86/pci/vmd.c
@@ -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;
}