Paul Mundt 1c8db713e2 sh: Fix up smp_mb__xxx() memory barriers for SH-4A SMP. ...

In the past these were simply wrapping to barrier() which was sufficient
on SH SMP platforms predating SH-4A. Unfortunately due to ll/sc semantics
an explicit synco is needed in these cases, which is sorted for us by
just switching these over to smp_mb(). smp_mb() also has the benefit of
being wrapped to barrier() in the UP and non-SH4A cases, so old behaviour
is maintained for those parts.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2009-10-18 15:36:02 +09:00

2.5 KiB

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