Re: [PATCH v2 5/5] MIPS: Move cache setup to setup_arch().

[Shane McDonald <mcdonald.shane@gmail.com>]

On Mon, Jun 11, 2012 at 12:32 PM, Shane McDonald
<mcdonald.shane@gmail.com> wrote:
> There is a line:
>
> __setup("cca=", cca_setup);
>
> that seems to be used to call cca_setup().  I don't know how
> the __setup() works, so I'm a little lost on the solution myself.
>
> Note that, besides the cca_setup(), there is also a routine
> setcoherentio() that is defined the same way as cca_setup().
> I suspect that suffers from the same problem as cca_setup().

I've been doing a little learning on how the __setup() macro works.
A proposed solution I have is to change from using the __setup()
macro to using early_param() to mark the call to cca_setup().
Functions marked with __setup() are executed late in the boot
process, whereas those marked with early_param() occur
very early in the process.  I have tried this out,
and it solves my problem, but I'm looking for feedback on
whether this is the correct solution.

Unless I get any different feedback, I'll send out a patch with
my change later today.

Shane McDonald