[PATCH 1/2] powerpc: Add spinlock to request_phb_iospace()

[Benjamin Herrenschmidt]

On Tue, 2007-05-15 at 14:26 +1000, Stephen Rothwell wrote:
> On Tue, 15 May 2007 14:16:26 +1000 Benjamin Herrenschmidt <benh at kernel.crashing.org> wrote:
> >
> > request_phb_iospace() can be called from different CPUs at init
> > time (at least with my next patch) and thus needs a spinlock. As
> > for the next patch, this is a temporary workaround for 2.6.22
> > issues until my rewrite of IO mappings is ready (for 2.6.23)
> 
> What problem is this solving?

See the description of the next patch.

Ben.