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| author | Christoph Hellwig | 2018-12-06 22:39:32 +0100 |
|---|---|---|
| committer | Christoph Hellwig | 2018-12-13 21:06:18 +0100 |
| commit | 356da6d0cde3323236977fce54c1f9612a742036 (patch) | |
| tree | 87ad8176833266fbaa038780d67aebcc490d0d64 /arch/ia64/hp/common/hwsw_iommu.c | |
| parent | vmd: use the proper dma_* APIs instead of direct methods calls (diff) | |
| download | kernel-qcow2-linux-356da6d0cde3323236977fce54c1f9612a742036.tar.gz kernel-qcow2-linux-356da6d0cde3323236977fce54c1f9612a742036.tar.xz kernel-qcow2-linux-356da6d0cde3323236977fce54c1f9612a742036.zip | |
dma-mapping: bypass indirect calls for dma-direct
Avoid expensive indirect calls in the fast path DMA mapping
operations by directly calling the dma_direct_* ops if we are using
the directly mapped DMA operations.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/hp/common/hwsw_iommu.c')
| -rw-r--r-- | arch/ia64/hp/common/hwsw_iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/hp/common/hwsw_iommu.c b/arch/ia64/hp/common/hwsw_iommu.c index f40ca499b246..8840ed97712f 100644 --- a/arch/ia64/hp/common/hwsw_iommu.c +++ b/arch/ia64/hp/common/hwsw_iommu.c @@ -38,7 +38,7 @@ static inline int use_swiotlb(struct device *dev) const struct dma_map_ops *hwsw_dma_get_ops(struct device *dev) { if (use_swiotlb(dev)) - return &dma_direct_ops; + return NULL; return &sba_dma_ops; } EXPORT_SYMBOL(hwsw_dma_get_ops); |