From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Tue, 14 Jun 2011 00:57:51 +0000 (+1000)
Subject: powerpc/mm: Fix memory_block_size_bytes() for non-pseries
X-Git-Tag: v3.0~42^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=770e1ac5f29003fca18af4e67eb5a05ddb5b1491;p=pandora-kernel.git

powerpc/mm: Fix memory_block_size_bytes() for non-pseries

Just compiling pseries in the kernel causes it to override
memory_block_size_bytes() regardless of what is the runtime
platform.

This cleans up the implementation of that function, fixing
a bug or two while at it, so that it's harmless (and potentially
useful) for other platforms. Without this, bugs in that code
would trigger a WARN_ON() in drivers/base/memory.c when
booting some different platforms.

If/when we have another platform supporting memory hotplug we
might want to either move that out to a generic place or
make it a ppc_md. callback.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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