[PATCH v2] powerpc/gpio: Fix the wrong GPIO input data on MPC8572/MPC8536

[Linus Walleij]

On Fri, Nov 22, 2013 at 9:12 AM, Liu Gang <Gang.Liu at freescale.com> wrote:

> For MPC8572/MPC8536, the status of GPIOs defined as output
> cannot be determined by reading GPDAT register, so the code
> use shadow data register instead. But the code may give the
> wrong status of GPIOs defined as input under some scenarios:
(...)
> Signed-off-by: Liu Gang <Gang.Liu at freescale.com>
> ---
> changes in v2:
>  - Added more description of the problem.
>  - Reduced one in_be32() call.
>  - Do not modify the shadow data.

Applied this v2 version, added ACKs and tagged for stable.

Yours,
Linus Walleij