Re: [PATCH v6 05/14] crypto: marvell/CESA: add TDMA support
From: Herbert Xu
Date: Wed Jun 17 2015 - 08:26:39 EST
On Wed, Jun 17, 2015 at 01:33:24PM +0200, Boris Brezillon wrote:
> Actually, I think I don't need to save the dma_map_sg return val, since
> I'm using the sg_next function to iterate over the scatterlist. Am I
> right ?
> IOW, is the ->map_sg() function (in dma_map_ops) supposed to merge the
> contiguous entries and then flag the unused entries with the is_chain
> flag ?
Right. If you're simply using sg_dma_length in conjunction with
sg_next then you don't need the new length.
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/