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Subject: Re: struct page to 36 (or 64) bit bus address?
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Andrea Arcangeli wrote:

> ... (the API says that if you get null out of the map call you
> should fallback, but no driver checks for this null retval and so in
> turn they're all prone to crash, not going to be fixed in 2.4 I guess).

That strikes me as a pretty basic programming error. Why on Earth is
it not considered a problem urgently needing a fix?