函数逻辑报告

函数名称：dma_mmap_from_dev_coherent() - mmap memory from the device coherent pool*@dev: device from which the memory was allocated*@vma: vm_area for the userspace memory*@vaddr: cpu address returned by dma_alloc_from_dev_coherent*@size: size of the memory buffer

函数原型：int dma_mmap_from_dev_coherent(struct device *dev, struct vm_area_struct *vma, void *vaddr, size_t size, int *ret)

返回类型：int

参数：