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SubjectRe: [PATCH] IBM Lanstreamer bugfixes
>   For #6, the udelay(1) had more to do with the following write() than 
> with spin_lock(). When that delay was not there, the write failed
> randomly. The same with the udelay(10) at the end of the interrupt
> function...

That smells of covering up a race rather than fixing something. Another
thing you may be doing perhaps is hiding PCI posting effects ?

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