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x86, iommu: Mark DMAR IRQ as non-threaded

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commit 477694e71113fd0694b6bb0bcc2d006b8ac62691 upstream.

Mark this lowlevel IRQ handler as non-threaded. This prevents a boot
crash when "threadirqs" is on the kernel commandline. Also the
interrupt handler is handling hardware critical events which should
not be delayed into a thread.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Thomas Gleixner
2011-07-19 16:25:42 +02:00
committed by Greg Kroah-Hartman
parent e74aa3593a
commit 56794483bc
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/dmar.c
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@@ -1388,7 +1388,7 @@ int dmar_set_interrupt(struct intel_iommu *iommu)
return ret; return ret;
} }
ret = request_irq(irq, dmar_fault, 0, iommu->name, iommu); ret = request_irq(irq, dmar_fault, IRQF_NO_THREAD, iommu->name, iommu);
if (ret) if (ret)
printk(KERN_ERR "IOMMU: can't request irq\n"); printk(KERN_ERR "IOMMU: can't request irq\n");
return ret; return ret;