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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Fri Sep 15 2000 - 21:00:21 EST