extern const struct dma_map_ops dummy_dma_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
extern const struct dma_map_ops dummy_dma_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
/* do not use this function in a driver */
static inline bool is_device_dma_coherent(struct device *dev)
{
/* do not use this function in a driver */
static inline bool is_device_dma_coherent(struct device *dev)
{