[PATCH] Addition to the i2c series, copy the ppc mpc-i2c driver before changing it on powerpc

[Jon Smirl]

On 12/10/07, Grant Likely <grant.likely at secretlab.ca> wrote:
> On 12/10/07, Jon Smirl <jonsmirl at gmail.com> wrote:
> > Copy mpc-i2c to preserve support for ARCH=ppc and allow changes on ARCH=powerpc
> >
> > Temporarily copy the mpc-i2c driver to continue support for the ppc
> > architecture until it is removed in mid-2008. This file should be
> > deleted as part of ppc's final removal.
> >
> > Signed-off-by: Jon Smirl <jonsmirl at gmail.com>
>
> For the record; I'm not fond of this approach.  Supporting both bus
> bindings in the single driver is simple and results in less code churn
> when arch/ppc is removed, and encourages separation between the driver
> proper and the bus bindings which is just a good idea for all drivers
> in general.

But it also triggers a testing burden on a bunch of hardware that I
don't own. By copying off the known working ppc driver the testing
burden is avoided.

A subject for later discussion is whether platform bus should even
exist when of_platform_bus is in use. I have removed platform_bus for
the mpc5200 in my local builds. Removing platform bus exposed a bunch
of junk from other platofrms that had inadvertently accumulated into
the mpc5200 build.

-- 
Jon Smirl
jonsmirl at gmail.com