From: Herbert Xu <herbert-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
Subject: Re: [PATCH v5 05/14] crypto: marvell/CESA: add TDMA support
Date: Wed, 17 Jun 2015 15:18:29 +0800
Message-ID: <20150617071829.GA9895@gondor.apana.org.au>
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Cc: "David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
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	Tawfik Bayouk <tawfik-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
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To: Boris Brezillon <boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
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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.

Cheers,
-- 
Email: Herbert Xu <herbert-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
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