diff options
Diffstat (limited to 'include/linux/dma-mapping.h')
| -rw-r--r-- | include/linux/dma-mapping.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index e97f23e8b2d9b..ab8710888ddff 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -164,6 +164,13 @@ int dma_mmap_from_coherent(struct device *dev, struct vm_area_struct *vma, #ifdef CONFIG_HAS_DMA #include <asm/dma-mapping.h> +static inline const struct dma_map_ops *get_dma_ops(struct device *dev) +{ + if (dev && dev->dma_ops) + return dev->dma_ops; + return get_arch_dma_ops(dev ? dev->bus : NULL); +} + static inline void set_dma_ops(struct device *dev, const struct dma_map_ops *dma_ops) { |