dma_vmap_noncontiguous
buf->vaddr = dma_vmap_noncontiguous(buf->dev, buf->size,
buffer = dma_vmap_noncontiguous(dmadev, size, sgt);
void *dma_vmap_noncontiguous(struct device *dev, size_t size,
EXPORT_SYMBOL_GPL(dma_vmap_noncontiguous);
p = dma_vmap_noncontiguous(dmab->dev.dev, size, sgt);