From: Michael Ellerman <mpe@ellerman.id.au>
Date: Wed, 15 Jan 2014 07:14:29 +0000 (+1100)
Subject: powerpc: Implement arch_spin_is_locked() using arch_spin_value_unlocked()
X-Git-Tag: v3.14-rc1~80^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7179ba52889bef7e5e23f72908270e1ab2b7fc6f;p=pandora-kernel.git

powerpc: Implement arch_spin_is_locked() using arch_spin_value_unlocked()

At a glance these are just the inverse of each other. The one subtlety
is that arch_spin_value_unlocked() takes the lock by value, rather than
as a pointer, which is important for the lockref code.

On the other hand arch_spin_is_locked() doesn't really care, so
implement it in terms of arch_spin_value_unlocked().

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

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