From: Boris Brezillon <boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Subject: Re: [PATCH v5 05/14] crypto: marvell/CESA: add TDMA support
Date: Wed, 17 Jun 2015 09:37:34 +0200
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To: Herbert Xu <herbert-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
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On Wed, 17 Jun 2015 15:18:29 +0800
Herbert Xu <herbert-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org> wrote:

> On Wed, Jun 17, 2015 at 09:15:03AM +0200, Boris Brezillon wrote:
> >
> > Anyway, now I'm doing the following test:
> > 
> > if (creq->src_nents && !ret)
> > 	return -ENOMEM;
> 
> Best not call dma_map_sg at all in the !src_nents case as I think
> some architectures will WARN or BUG if you give it a zero-length
> list.

Okay, I've changed it to test for the !src_nents before calling
dma_map_sg.

Thanks,

Boris


-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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