On Fri, Nov 30, 2018 at 5:23 AM Christoph Hellwig <hch@xxxxxx> wrote: > > Error reporting for the dma_map_single and dma_map_page operations is > currently a mess. [..] I don't see anything objectionable there, but it's not like I checked any of the context of the patches. For all I know there are odd corner cases where some zero vs DMA_MAPPING_ERROR confusion lurks, but I guess we'll find out.. So you can add my acked-by, fwiw. Linus