On Fri, Nov 23, 2018 at 07:55:11AM +0100, Christoph Hellwig wrote: > On Thu, Nov 22, 2018 at 09:55:25AM -0800, Linus Torvalds wrote: > > No, the big immediate benefit of allowing "return -EINVAL" etc is > > simply legibility and error avoidance. > > Well, I can tweak the last patch to return -EINVAL from dma_mapping_error > instead of the old 1 is as bool true. The callers should all be fine, > although I'd have to audit them. Still wouldn't help with being able to > return different errors. Any opinions? I'd really like to make some forward progress on this series.