tree 71a5f1e9efb001a4f46bc077c024dedd1f94a835
parent a63fdc5156f2ef5690b6cf03d72b0c4917efbba7
author Benjamin Herrenschmidt <benh@kernel.crashing.org> 1308013071 +1000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1310433405 +1000

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>