Re: [RFC][PATCH] ahci: Add support for Promise PDC42819

[Jeff Garzik <jeff@garzik.org>]

Alan Cox wrote:
>> Refresh my memory...  what is the problem with loading pata_marvell first?
> 
> The fact its almost impossible to do with a distribution kernel. eg
> you can't make it work with Fedora (see the Fedora bugs assigned to
> you)

Hogwash -- just load one driver before the other.


> If pata_marvell should be driving these chips please remove the entries
> from the ahci.c driver as I asked before.
> 
> If ahci.c should be driving them then we need the documentation for
> whatever extension they use driving the ports via AHCI. Clearly there is
> one as its possible under Windows.

Situation before ahci mod:

	Users with PATA may use pata_marvell.
	Users wanting SATA screwed.
	Users wanting PATA+SATA screwed.

Situation after ahci mod:

	Users with PATA may use pata_marvell
	Users with SATA may use ahci
	Users wanting PATA+SATA screwed


>> AFAICS, if you load pata_marvell before ahci, it will grab the PATA 
>> disks and the PCI device itself.
> 
> If you have a degree in initrd-foo

Just switch the order of 'ahci' and 'pata_marvell' in 
/etc/modprobe.conf, then use Fedora's tools regenerate the initrd.

See?  It's not rocket science, and the current configuration can be 
easily made to work for Fedora users.

	Jeff