Request for testing an alternate branch

[Justin Hibbits]

On Sun, 8 Dec 2013 14:38:53 +0100
Marius Strobl <marius at alchemy.franken.de> wrote:

> On Wed, Dec 04, 2013 at 10:21:13PM -0800, Justin Hibbits wrote:
> > I've been working on the projects/pmac_pmu branch for some time now
> > to add suspend/resume as well as CPU speed change for certain
> > PowerPC machines, about a year since I created the branch, and now
> > it's stable enough that I want to merge it into HEAD, hence this
> > request. However, it does touch several drivers, turning them into
> > "early drivers", such that they can be initialized, and suspended
> > and resumed at a different time.  Saying that, I do need testing
> > from other architectures, to make sure I haven't broken anything.
> > 
> > The technical details:
> > 
> > To get proper ordering, I've extended the bus_generic_suspend() and
> > bus_generic_resume() to do multiple passes.  Devices which cannot be
> > enabled or disabled at the current pass level would return an
> > EAGAIN. This could possibly cause problems, since it's an addition
> > to an existing API rather than a new API to run along side it, so
> > it needs a great deal of testing.  It works fine on PowerPC, but I
> > don't have any i386/amd64 or sparc64 hardware to test it on, so
> > would like others who do to test it.  I don't think that it would
> > impact x86 at all (testing is obviously required), because the
> > nexus is not an EARLY_DRIVER_MODULE, so all devices would be
> > handled at the same pass.  But, I do know the sparc64 has an
> > EARLY_DRIVER_MODULE() nexus, so that will likely be impacted.
> > 
> > Also, any comments are of course welcome.  Technical concerns are
> > obviously welcome, and I will try to address everything.
> 
> Do you have a patch against head?
> 
> Marius
> 

Here you go.

- Justin
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