[PATCH] [POWERPC] Fix initial lmb add region with a non-zero base

[David Miller]

From: Kumar Gala <galak at kernel.crashing.org>
Date: Wed, 13 Feb 2008 07:37:27 -0600 (CST)

> If we add to an empty lmb region with a non-zero base we will not coalesce
> the number of regions done to one.  This causes problems on ppc32 for the
> memory region as its assumed to only have one region.
> 
> We can fix this be easily specially casing the initial add to just replace
> the dummy region.
> 
> ---
> 
> Posting this since Dave's looking a pulling the lmb code out into lib/ and
> sharing it between powerpc and sparc.
> 
> (this is my git tree git.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc.git)

I noticed this issue when I use lmb on sparc64 and I intended to bring
it up eventually.  Thanks for fixing it!