On Fri, 31 Aug 2018 08:53:29 +0800, "phind@gmail.com" said:
> Thank for your time, I'm new to linux kernel. I am reading LDD3 chapter
> 15, Dirrect Memory Access section. I see that when I call function
> /dma_map_single/ and /dma_unmap_single/, I need to pass a direction as a
> parameter.
Hi everyone,
Thank for your time, I'm new to linux kernel. I am reading LDD3 chapter
15, Dirrect Memory Access section. I see that when I call function
/dma_map_single/ and /dma_unmap_single/, I need to pass a direction as a
parameter. I wonder what is purpose of it? Does It relate to
