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| author | Christoph Hellwig <hch@lst.de> | 2018-12-06 13:39:32 -0800 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-12-13 21:06:18 +0100 |
| commit | 356da6d0cde3323236977fce54c1f9612a742036 (patch) | |
| tree | 87ad8176833266fbaa038780d67aebcc490d0d64 /include/asm-generic | |
| parent | 190d4e5916a2d70a11009022b968fca948fb5dc7 (diff) | |
| download | linux-0-day-356da6d0cde3323236977fce54c1f9612a742036.tar.gz linux-0-day-356da6d0cde3323236977fce54c1f9612a742036.tar.xz | |
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 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/dma-mapping.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-generic/dma-mapping.h b/include/asm-generic/dma-mapping.h index 880a292d792fb..c13f46109e888 100644 --- a/include/asm-generic/dma-mapping.h +++ b/include/asm-generic/dma-mapping.h @@ -4,7 +4,7 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) { - return &dma_direct_ops; + return NULL; } #endif /* _ASM_GENERIC_DMA_MAPPING_H */ |