[PATCH RFC] pata_platform: add 8 bit data io support

[Alan Cox]

On Mon, 13 Oct 2008 16:17:02 +0900
Tejun Heo <htejun at gmail.com> wrote:

> Hello,
> 
> Wang Jian wrote:
> > +static void pata_platform_postreset(struct ata_link *link, unsigned int *classes)
> > +{
> > +	struct ata_port *ap = link->ap;
> > +	struct ata_device *dev;
> > +	u8 select = ATA_DEVICE_OBS;
> > +
> > +	/* Call default callback first */
> > +	ata_sff_postreset(link, classes);
> > +
> > +	if (!(ap->flags & ATA_FLAG_8BIT_DATA))
> > +		return;
> > +
> > +	/* Set 8-bit mode. We know we can do that */

Not really - the 8bit transfer command is CFA specific not ATA or ATAPI,
in addition it is not needed with most hardware that is running in 8bit
modes.