函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\dma-mapping.h Create Date:2022-07-27 06:51:41
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:dma_unmap_sg_attrs

函数原型:static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, unsigned long attrs)

返回类型:void

参数:

类型参数名称
struct device *dev
struct scatterlist *sg
intnents
enum dma_data_directiondir
unsigned longattrs
330  ops等于get_dma_ops(dev)
332  BUG_ON(!valid_dma_direction(dir))
333  debug_dma_unmap_sg(dev, sg, nents, dir)
334  如果dma_is_direct(ops)则dma_direct_unmap_sg(dev, sg, nents, dir, attrs)
336  否则如果unmap_sgunmap_sg(dev, sg, nents, dir, attrs)
调用者
名称描述
ib_dma_unmap_sg_attrs