Re: [RFC][PATCH] libata ATAPI alignment

Alan Cox
2005-07-29T13:15:57Z

On Gwe, 2005-07-29 at 01:06 -0400, Jeff Garzik wrote:
> So, one thing that's terribly ugly about SATA ATAPI is that we need to
> pad DMA transfers to the next 32-bit boundary, if the length is not
> evenly divisible by 4.

Looks good and avoids the special case leaking into the core code.

> Complicating matters, we currently must support two methods of data
> buffer submission: a single kernel virtual address, or a struct
> scatterlist.

For the moment - also you turn the single buffer into a one entry sglist
so its not to bad.

> Review is requested by any and all parties, as well as suggestions for
> a prettier approach.

I'd pull the code into seperate functions but thats my only real