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SubjectRe: New resources - pls, explain :-(
Linus Torvalds wrote:
> - writel() - strict ordering
> - __writel() - only to be used for people who REALLY know that they don't
> care about ordering.

As a bonus, it can actually be more efficient for writel() to implement
ordering instead of explicit barriers in the driver.

How so? See type aliasing rules...

-- Jamie

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