Re: [PATCH 0/4] USB & USBNET: loose DMA SG check and support usbnet DMA SG

Oliver Neukum
2013-07-31T11:12:13Z

On Wed, 2013-07-31 at 18:51 +0800, Ming Lei wrote:
> Hi,
>
> This patchset allows drivers to pass sg buffers which size can't be divided
> by max packet size of endpoint if the host controllers support this kind
> of sg buffers.

Cool. One question though. It makes sense to use sg only
if all elements are in memory capable of DMA. It seems to be possible
to have HCs which can do unlimited sg but are limited to 32bit DMA.

Regards
Oliver