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authorPunit Agrawal <punit.agrawal@arm.com>2014-09-01 17:16:01 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-09-12 17:38:58 +0100
commite918a62a2ba81d10a3cc2c513dc70034c9524a95 (patch)
tree6f2c9f379f791a251319be69149d0061b5672aeb /arch/arm/lib
parenta040803a9d6b8c1876d3487a5cb69602ebcbb82c (diff)
downloadlinux-e918a62a2ba81d10a3cc2c513dc70034c9524a95.tar.bz2
ARM: 8135/1: Fix in-correct barrier usage in SWP{B} emulation
According to the ARM ARMv7, explicit barriers are necessary when using synchronisation primitives such as SWP{B}. The use of these instructions does not automatically imply a barrier and any ordering requirements by the software must be explicitly expressed with the use of suitable barriers. Based on this, remove the barriers from SWP{B} emulation. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/lib')
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