Re: [PATCH v3 5/5] usb: dwc3: gadget: add support for SG lists

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* Felipe Balbi | 2011-12-19 11:17:17 [+0200]:

>add support for SG lists on dwc3 driver. With
>this we can e.g. use VFS layer's SG lists on
>storage gadgets so that we can start bigger
>transfers and improve throughput.

You could add in the 1/5 mail that some gadget (uasp for instance) is
able to allocate larger buffer with the help of sgs which create the
illusion of an contigues buffer.

This patch only implemnts sg support for dwc3.

>Signed-off-by: Felipe Balbi <balbi@xxxxxx>

The code looks sane. The only corner case (NUM_DWC3_TRB > sg_entries)
can be fixed later. We don't have any users right now so it is not an
issue. This has been tested with my uasp so it works good enough :)

Sebastian
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