aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/amd_iommu.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/amd_iommu.c')
-rw-r--r--arch/x86/kernel/amd_iommu.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 679f2a8..d743aa0 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -876,7 +876,7 @@ static dma_addr_t map_single(struct device *dev, phys_addr_t paddr,
if (addr == bad_dma_address)
goto out;
- if (iommu->need_sync)
+ if (unlikely(iommu->need_sync))
iommu_completion_wait(iommu);
out:
@@ -905,7 +905,7 @@ static void unmap_single(struct device *dev, dma_addr_t dma_addr,
__unmap_single(iommu, domain->priv, dma_addr, size, dir);
- if (iommu->need_sync)
+ if (unlikely(iommu->need_sync))
iommu_completion_wait(iommu);
spin_unlock_irqrestore(&domain->lock, flags);
@@ -968,7 +968,7 @@ static int map_sg(struct device *dev, struct scatterlist *sglist,
goto unmap;
}
- if (iommu->need_sync)
+ if (unlikely(iommu->need_sync))
iommu_completion_wait(iommu);
out:
@@ -1014,7 +1014,7 @@ static void unmap_sg(struct device *dev, struct scatterlist *sglist,
s->dma_address = s->dma_length = 0;
}
- if (iommu->need_sync)
+ if (unlikely(iommu->need_sync))
iommu_completion_wait(iommu);
spin_unlock_irqrestore(&domain->lock, flags);
@@ -1061,7 +1061,7 @@ static void *alloc_coherent(struct device *dev, size_t size,
goto out;
}
- if (iommu->need_sync)
+ if (unlikely(iommu->need_sync))
iommu_completion_wait(iommu);
out:
@@ -1093,7 +1093,7 @@ static void free_coherent(struct device *dev, size_t size,
__unmap_single(iommu, domain->priv, dma_addr, size, DMA_BIDIRECTIONAL);
- if (iommu->need_sync)
+ if (unlikely(iommu->need_sync))
iommu_completion_wait(iommu);
spin_unlock_irqrestore(&domain->lock, flags);