dma_mmap_from_dev_coherent  173 include/linux/dma-mapping.h #define dma_mmap_from_dev_coherent(dev, vma, vaddr, order, ret) (0)
dma_mmap_from_dev_coherent  275 kernel/dma/coherent.c int dma_mmap_from_dev_coherent(struct device *dev, struct vm_area_struct *vma,