[PATCH v4] powerpc: change rheap functions to use ulongs instead of pointers

[Kumar Gala]

On Tue, 8 May 2007, Timur Tabi wrote:

> The rheap allocation functions return a pointer, but the actual value is based
> on how the heap was initialized, and so it can be anything, e.g. an offset
> into a buffer.  A ulong is a better representation of the value returned by
> the allocation functions.
>
> This patch changes all of the relevant rheap functions to use a unsigned long
> integers instead of a pointer.  In case of an error, the value returned is
> a negative error code that has been cast to an unsigned long.  The caller can
> use the IS_ERR_VALUE() macro to check for this.
>
> All code which calls the rheap functions is updated accordingly.  Macros
> IS_MURAM_ERR() and IS_DPERR(), have been deleted in favor of IS_ERR_VALUE().
>
> Also added error checking to rh_attach_region().
>
> Signed-off-by: Timur Tabi <timur at freescale.com>

applied.

- k