Messages in this thread | | | Date | Wed, 17 Jun 2015 20:25:33 +0800 | From | Herbert Xu <> | Subject | Re: [PATCH v6 05/14] crypto: marvell/CESA: add TDMA support |
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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.
Cheers, -- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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