Date: Wed, 17 Jun 2015 09:37:34 +0200
From: Boris Brezillon <boris.brezillon@free-electrons.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>, linux-crypto@vger.kernel.org,
        Arnaud Ebalard <arno@natisbad.org>, Tawfik Bayouk <tawfik@marvell.com>,
        Lior Amsalem <alior@marvell.com>, Nadav Haklai <nadavh@marvell.com>,
        Eran Ben-Avi <benavi@marvell.com>,
        Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
        Gregory CLEMENT <gregory.clement@free-electrons.com>,
        Jason Cooper <jason@lakedaemon.net>,
        Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
        Andrew Lunn <andrew@lunn.ch>, Rob Herring <robh+dt@kernel.org>,
        Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Kumar Gala <galak@codeaurora.org>, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
        Imre Kaloz <kaloz@openwrt.org>
Subject: Re: [PATCH v5 05/14] crypto: marvell/CESA: add TDMA support
Message-ID: <20150617093734.03f84134@bbrezillon>
In-Reply-To: <20150617071829.GA9895@gondor.apana.org.au>
References: <1434448748-10828-1-git-send-email-boris.brezillon@free-electrons.com>
	<1434448748-10828-6-git-send-email-boris.brezillon@free-electrons.com>
	<20150617050527.GA8807@gondor.apana.org.au>
	<20150617055633.GA9123@gondor.apana.org.au>
	<20150617091503.5f74b6e5@bbrezillon>
	<20150617071829.GA9895@gondor.apana.org.au>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 846
Lines: 31

On Wed, 17 Jun 2015 15:18:29 +0800
Herbert Xu <herbert@gondor.apana.org.au> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/