Re: [RFT] [SPARC] Emulate cmpxchg like parisc

[Martin Habets <errandir_news@mph.eclipse.co.uk>]

On Tue, May 29, 2007 at 01:59:31PM -0700, David Miller wrote:
> From: Martin Habets <errandir_news@mph.eclipse.co.uk>
> Date: Tue, 29 May 2007 21:30:45 +0100
> 
> > On Tue, May 29, 2007 at 01:12:33AM -0700, David Miller wrote:
> > > From: Martin Habets <errandir_news@mph.eclipse.co.uk>
> > > Date: Tue, 29 May 2007 00:37:01 +0100
> > > 
> > > > Good to see someone has a crystal ball handy. So a patch like like this
> > > > to solve the DRM issue? With it DRM can no longer be selected.
> > > > 
> > > > ---
> > > > The DRM code depends on an atomic version of cmpxchg(), which is not
> > > > available on sparc32. Since other platforms besides sparc32 have
> > > > this issue a KCONFIG option is added for it.
> > > > 
> > > > Martin
> > > > 
> > > > 	Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk>
> > > 
> > > This looks great, I've applied Kyle's original patch and this
> > > one, thanks a lot!
> > 
> > Ehh, Kyle's original patch did not build. See my initial reply to that
> > one, which has a version that does build cleanly.
> 
> I fixed his version to build and more match the types of the
> parisc code when I chekced it in.

I also got a build error on 'addr' in __cmpxchg_u32(). Changed those
to 'ptr'.
Maybe I've just got an -Wextra-dumb switch on my cc, or you've got
a -Wpsychic :).

-- 
Martin