On Mon, Dec 11, 2017 at 08:49:57AM +0100, Antoine Tenart wrote: > > So this patch is indeed fixing an issue, which should probably not be > there in the first place. I guess you recommend using a buffer local to > the driver instead, and only update areq->request on completion (final).
That's one way to do it. Ideally you'd only use the local buffer for the non-final case so that the final case just does the DMA to the final destination. Cheers, -- Email: Herbert Xu <herb...@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
