From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Mon, 17 Jan 2011 15:42:42 +0000 (+0000)
Subject: ARM: v6k: select cmpxchg code sequences according to V6 variants
X-Git-Tag: v2.6.39-rc1~463^2~1^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ed67a53591db641543d57f31c182591a429dc93;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.

Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Sourav Poddar <sourav.poddar@ti.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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