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SubjectRe: 2.6.15-rc1: IDE: fix potential data corruption with SL82C105 interfaces

Alan Cox wrote:
> On Sad, 2005-11-12 at 16:55 +0000, Russell King wrote:
>>We must _never_ _ever_ on pain of death enable IDE DMA on SL82C105
>>chipsets where the southbridge revision is <= 5, otherwise data
>>corruption will occur.

> If you are fixing this driver also set ->serialize = 1; before someone
> with dual channel device gets burned.

Heh, this driver also tries to cache the single PCI register per-channel
like hpt366.c... This buglet concerns using fast PIO timings and is probably
harmless though but needs to be fixed -- I'll send a patch soon...
I wonder what is otherwise wrong with using 2 channels concurrently?

MBR, Sergei
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