From: Russell King - ARM Linux <linux@arm.linux.org.uk>
Date: Tue, 18 Jan 2011 22:43:56 +0000 (-0800)
Subject: ARM: v6k: select cmpxchg code sequences according to V6 variants
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efa98b932e88d0e9cbb186856647fe4f90cd5624;p=pandora-kernel.git

ARM: v6k: select cmpxchg code sequences according to V6 variants

If CONFIG_CPU_V6 is enabled, we must avoid the byte/halfword/doubleword
exclusive operations, which aren't implemented before V6K.  Use the
generic versions (or omit them) instead.

If CONFIG_CPU_V6 is not set, but CONFIG_CPU_32v6K is enabled, we have
the K extnesions, so use these new instructions.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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