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SubjectRe: libata & no PCI: dma_[un]map_single undefined
On Tue, Jun 05, 2007 at 04:50:56PM +0100, Alan Cox wrote:
> > If you don't have DMA capabilities, does libata still need ->pad and
> > ->pad_dma set?
> It shouldn't - nor the prd. You don't need to use the default
> ata_port_start in this case. I've just added ata_sff_port_start to my
> tree which figures out which to allocate for SFF devices.

I had already sorted out the PRD, but I couldn't convince myself that
the pad stuff wasn't used, so for pata_icside I had:

static int pata_icside_port_start(struct ata_port *ap)
/* No PRD to alloc */
return ata_pad_alloc(ap, ap->dev);

Therefore, I can just arrange for this to do nothing and just return
zero. A similar fix for pata_platform should probably also be in order
as well.

Russell King
Linux kernel 2.6 ARM Linux -
maintainer of:
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