Re: Update Linux 2.4 Status/TODO list

[Andre Hedrick]

On Wed, 13 Sep 2000, Alan Cox wrote:

> > >      * PIIXn tuning can hang laptop (2.4.0-test8-pre6, David Ford)
> > 
> > Need more details of how APM/ACPI is dorking with DMA settins by the OEM.
> 
> Case 1 I've seen is assuming windows put the drive back into PIO no multimode
> before letting the bios suspend (for suspend to disk)
> Case 2 I've seen is coming back from the BIOS with the controller in PIO
>       non multimode and forgetting the previous settings

This is why I was wanting to buffer setting in the driver and offer
APM/ACPI the callout to prevent this.  Again you would have the option of
invoking spin-up by APM attempts or using taskfile commands to brut force
it into life.

Cheers,

Andre Hedrick
The Linux ATA/IDE guy

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