[GIT pull] irq fixes for 3.1

[Thomas Gleixner]

Linus,

Please pull the latest irq-fixes-for-linus git tree from:

   git://tesla.tglx.de/git/linux-2.6-tip irq-fixes-for-linus

Thanks,

	tglx

------------------>
Geert Uytterhoeven (1):
      genirq: Make irq_shutdown() symmetric vs. irq_startup again

Thomas Gleixner (1):
      x86, iommu: Mark DMAR IRQ as non-threaded


 drivers/iommu/dmar.c |    2 +-
 kernel/irq/chip.c    |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 3dc9bef..6dcc7e2 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/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;
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index d5a3009..dc5114b 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -178,7 +178,7 @@ void irq_shutdown(struct irq_desc *desc)
 	desc->depth = 1;
 	if (desc->irq_data.chip->irq_shutdown)
 		desc->irq_data.chip->irq_shutdown(&desc->irq_data);
-	if (desc->irq_data.chip->irq_disable)
+	else if (desc->irq_data.chip->irq_disable)
 		desc->irq_data.chip->irq_disable(&desc->irq_data);
 	else
 		desc->irq_data.chip->irq_mask(&desc->irq_data);
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