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authorMichael Ellerman <michael@ellerman.id.au>2013-10-11 14:07:57 +1100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-10-11 16:50:19 +1100
commita4da0d50b2a00b79390092e6248ca88b7d93c81d (patch)
tree4a481f28de594306b612938e037dd015114c2fd7 /drivers/char
parentf95dabef4c70e27e5114f4802fe6234ff82ce406 (diff)
downloadlinux-linaro-stable-a4da0d50b2a00b79390092e6248ca88b7d93c81d.tar.gz
powerpc: Implement arch_get_random_long/int() for powernv
Add the plumbing to implement arch_get_random_long/int(). It didn't seem worth adding an extra ppc_md hook for int, so we reuse the one for long. Add an implementation for powernv based on the hwrng found in power7+ systems. We whiten the output of the hwrng, and the result passes all the dieharder tests. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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