From 56794483bcbf98296dffd8d8923402791b305be2 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 19 Jul 2011 16:25:42 +0200 Subject: [PATCH] x86, iommu: Mark DMAR IRQ as non-threaded 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 Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- drivers/pci/dmar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c index 3dc9befa5aec..6dcc7e2d54de 100644 --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -1388,7 +1388,7 @@ int dmar_set_interrupt(struct intel_iommu *iommu) 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) printk(KERN_ERR "IOMMU: can't request irq\n"); return ret; -- 2.34.1