linux-kernel - Re: [PATCH v7 00/14] crypto: add a new driver for Marvell's CESA

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Message-ID: <CAP=VYLpSrTvXRovWo4G7AXWv1OKFQRpQR255hS5z+=h4+XOLhg@mail.gmail.com>
Date:	Sat, 20 Jun 2015 20:14:08 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	"David S. Miller" <davem@...emloft.net>,
	linux-crypto@...r.kernel.org, Arnaud Ebalard <arno@...isbad.org>,
	Tawfik Bayouk <tawfik@...vell.com>,
	Lior Amsalem <alior@...vell.com>,
	Nadav Haklai <nadavh@...vell.com>,
	Eran Ben-Avi <benavi@...vell.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Jason Cooper <jason@...edaemon.net>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Andrew Lunn <andrew@...n.ch>, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Imre Kaloz <kaloz@...nwrt.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>
Subject: Re: [PATCH v7 00/14] crypto: add a new driver for Marvell's CESA

On Sat, Jun 20, 2015 at 4:32 PM, Paul Gortmaker
<paul.gortmaker@...driver.com> wrote:
> On Fri, Jun 19, 2015 at 10:24 AM, Herbert Xu
> <herbert@...dor.apana.org.au> wrote:
>> On Thu, Jun 18, 2015 at 03:46:16PM +0200, Boris Brezillon wrote:
>>> Hello,
>>>
>>> This patch series adds a new driver supporting Marvell's CESA IP.
>>> This driver addresses some limitations of the existing one.
>>> >From a performance and CPU load point of view the most important
>>> limitation in the existing driver is the lack of DMA support, thus
>>> preventing us from chaining crypto operations.
>>
>> All applied to cryptodev.  Thanks a lot!
>
> It seems this breaks linux-next allmodconfig on i386:

Similar breakage for s390 and sparc it seems:

drivers/crypto/marvell/cesa.c:353:2: error: implicit declaration of
function 'phys_to_dma' [-Werror=implicit-function-declaration]

http://kisskb.ellerman.id.au/kisskb/buildresult/12445415/
http://kisskb.ellerman.id.au/kisskb/buildresult/12445345/

If the CESA IP is only available on a single arch then
adding an arch dependency might be the easiest fix,
since phys_to_dma seems sparsely implemented.

Paul.
--

>
> http://kisskb.ellerman.id.au/kisskb/buildresult/12445342/
>
> ERROR: "phys_to_dma" [drivers/crypto/marvell/marvell-cesa.ko] undefined!
> make[2]: *** [__modpost] Error 1
>
> Paul.
> --
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