From fda3bec12d0979aae3f02ee645913d66fbc8a26e Mon Sep 17 00:00:00 2001 From: CQ Tang Date: Wed, 13 Jan 2016 21:15:03 +0000 Subject: iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG This is a 32-bit register. Apparently harmless on real hardware, but causing justified warnings in simulation. Signed-off-by: CQ Tang Signed-off-by: David Woodhouse Cc: stable@vger.kernel.org --- drivers/iommu/intel_irq_remapping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iommu/intel_irq_remapping.c') diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c index 1fae1881648c..e9b241b1c9dd 100644 --- a/drivers/iommu/intel_irq_remapping.c +++ b/drivers/iommu/intel_irq_remapping.c @@ -629,7 +629,7 @@ static void iommu_disable_irq_remapping(struct intel_iommu *iommu) raw_spin_lock_irqsave(&iommu->register_lock, flags); - sts = dmar_readq(iommu->reg + DMAR_GSTS_REG); + sts = readl(iommu->reg + DMAR_GSTS_REG); if (!(sts & DMA_GSTS_IRES)) goto end; -- cgit v1.2.3