[23/41] powerpc: Ensure that ppc_md is empty before probing for machine type

[Michael Ellerman]

On Tue, 2016-05-07 at 05:03:59 UTC, Benjamin Herrenschmidt wrote:
> Anything in there will be overwritten, so it helps catching nasty
> bugs if we check that it's indeed full of NULL's before we do so.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/84b62c72faa197a5c9b75ee935

cheers