> The barrier/ordering issue however might be a critical thing,
 > when using __raw_XXX. So one must always mmiowb() after such a write.

Not mmiowb() -- that is for ordering between CPUs, eg on systems like
Altix where PCI transactions might get reordered in the system fabric
before reaching the PCI bus.

You need a full wmb() to order between __raw_writel()s.

 - R.
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