Re: [PATCH #upstraem-fixes] ata_piix: detect and clear spurious IRQs

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> Well, the BMDMA status register read and cleared iff no qc is in
> flight so the patch isn't likely to break any of that.  That said,
> it's true that this is a big change this late in the release cycle.

Well the kind of thing that bothers me is disk corruption. On the PIIX4
for example a simple read of some of the control registers during a PIO
block transfer corrupts the data silently.... (See errata #15).

Alan
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