tree d235739a709ecf4f36d28ad34b80f8930ef525b1
parent 7d60b02cc7e6d67b498eed9ecb58010f61422325
author Benjamin Herrenschmidt <benh@kernel.crashing.org> 1248390907 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1250727156 +1000

powerpc/of: Remove useless register save/restore when calling OF back

enter_prom() used to save and restore registers such as CTR, XER etc..
which are volatile, or SRR0,1... which we don't care about. This
removes a bunch of useless code and while at it turns an mtmsrd into
an MTMSRD macro which will be useful to Book3E.

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