Hi Ladislav, On Mon, 16 Apr 2018 08:52:59 +0200 Ladislav Michl <la...@linux-mips.org> wrote:
> dma_map_single doesn't get the proper DMA address for vmalloced area, That's not true, it returns the right DMA (physical) address, it's just that: 1/ the memory location is not necessarily physically contiguous 2/ in case your arch is VIVT ot VIPT, there may be several entries in the cache pointing to the same physical location, and the cache maintenance operations done by dma_map_single() will only operate on one of these entries. > so disable DMA in this case. > The fix looks good though. Can you rephrase your commit message to make it clearer. Thanks, Boris
