diff options
| author | CQ Tang <cq.tang@intel.com> | 2016-01-13 22:15:03 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2016-01-14 00:30:49 +0100 |
| commit | fda3bec12d0979aae3f02ee645913d66fbc8a26e (patch) | |
| tree | 6f90194cfdc2b3fe1e7b84ac488785305a1caa27 /drivers/iommu/intel_irq_remapping.c | |
| parent | iommu/vt-d: Fix mm refcounting to hold mm_count not mm_users (diff) | |
| download | linux-fda3bec12d0979aae3f02ee645913d66fbc8a26e.tar.xz linux-fda3bec12d0979aae3f02ee645913d66fbc8a26e.zip | |
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 <cq.tang@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/iommu/intel_irq_remapping.c')
| -rw-r--r-- | drivers/iommu/intel_irq_remapping.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |