Possible regression in arm/io.h

[Will Deacon]

On Wed, Oct 24, 2012 at 04:04:46PM +0100, Bastian Hecht wrote:
> >> > Ok, I'll have a look at the impact of moving exclusively to "Q" when I get a
> >> > chance. Which toolchain are you using?
> >>
> >> gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
> >> For a more verbose info take a look at the bug report link.
> >
> > Ok, thanks. One other thing you could try while I try to find a copy of that
> > toolchain is changing the "+" modifier to an "=", like I proposed in this
> > version of the patch:
> 
> So if alter it to fit to your patch scheme the result is:

Sorry, the change wasn't as trivial as I thought -- you have to reorder the
constraints because an output becomes an input for the load accessors. I
tried it myself and it doesn't fix the issue (I can reproduce it now).

Will