diff options
Diffstat (limited to 'drivers/pci/intr_remapping.c')
| -rw-r--r-- | drivers/pci/intr_remapping.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c index f5e0ea724a6f..166959614087 100644 --- a/drivers/pci/intr_remapping.c +++ b/drivers/pci/intr_remapping.c @@ -404,7 +404,7 @@ int free_irte(int irq) static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode) { u64 addr; - u32 cmd, sts; + u32 sts; unsigned long flags; addr = virt_to_phys((void *)iommu->ir_table->base); @@ -415,9 +415,8 @@ static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode) (addr) | IR_X2APIC_MODE(mode) | INTR_REMAP_TABLE_REG_SIZE); /* Set interrupt-remapping table pointer */ - cmd = iommu->gcmd | DMA_GCMD_SIRTP; iommu->gcmd |= DMA_GCMD_SIRTP; - writel(cmd, iommu->reg + DMAR_GCMD_REG); + writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG); IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG, readl, (sts & DMA_GSTS_IRTPS), sts); @@ -427,9 +426,8 @@ static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode) spin_lock_irqsave(&iommu->register_lock, flags); /* enable comaptiblity format interrupt pass through */ - cmd = iommu->gcmd | DMA_GCMD_CFI; iommu->gcmd |= DMA_GCMD_CFI; - writel(cmd, iommu->reg + DMAR_GCMD_REG); + writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG); IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG, readl, (sts & DMA_GSTS_CFIS), sts); @@ -446,9 +444,8 @@ static void iommu_set_intr_remapping(struct intel_iommu *iommu, int mode) spin_lock_irqsave(&iommu->register_lock, flags); /* Enable interrupt-remapping */ - cmd = iommu->gcmd | DMA_GCMD_IRE; iommu->gcmd |= DMA_GCMD_IRE; - writel(cmd, iommu->reg + DMAR_GCMD_REG); + writel(iommu->gcmd, iommu->reg + DMAR_GCMD_REG); IOMMU_WAIT_OP(iommu, DMAR_GSTS_REG, readl, (sts & DMA_GSTS_IRES), sts); |