> > > > I cannot tell which way is better. Do you prefer to keep the iomem marker? > > The whole point of iomem is to prevent you from directly dereferencing that > memory. So casting it away to remove the warning simply defeats its > purpose. > > If you're worried about the overhead of readb perhaps you can look into > readb_relaxed after considering the effects of the barriers. > Thanks for the information. I'll send next patch as you suggested. -Neal
