linux-kernel - RE: [PATCHv9 2/2] dma: Add Freescale eDMA engine driver support

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Date:	Fri, 17 Jan 2014 02:22:26 +0000
From:	Jingchang Lu <jingchang.lu@...escale.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	"vinod.koul@...el.com" <vinod.koul@...el.com>,
	"dan.j.williams@...el.com" <dan.j.williams@...el.com>,
	"shawn.guo@...aro.org" <shawn.guo@...aro.org>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"swarren@...dotorg.org" <swarren@...dotorg.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: RE: [PATCHv9 2/2] dma: Add Freescale eDMA engine driver support



> -----Original Message-----
> From: Arnd Bergmann [mailto:arnd@...db.de]
> Sent: Thursday, January 16, 2014 7:03 PM
> To: Lu Jingchang-B35083
> Cc: vinod.koul@...el.com; dan.j.williams@...el.com; shawn.guo@...aro.org;
> pawel.moll@....com; mark.rutland@....com; swarren@...dotorg.org; linux-
> kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> devicetree@...r.kernel.org; Wang Huan-B18965
> Subject: Re: [PATCHv9 2/2] dma: Add Freescale eDMA engine driver support
> 
> On Thursday 16 January 2014, Jingchang Lu wrote:
> > Add Freescale enhanced direct memory(eDMA) controller support.
> > This module can be found on Vybrid and LS-1 SoCs.
> >
> > Signed-off-by: Alison Wang <b18965@...escale.com>
> > Signed-off-by: Jingchang Lu <b35083@...escale.com>
> 
> Very nice! All my previous comments have been addressed, so
> 
> Acked-by: Arnd Bergmann <arnd@...db.de>
> 
> One small comment still:
> 
> > +
> > +static DEFINE_MUTEX(fsl_edma_mutex);
> > +
> 
> I think this mutex should be part of struct fsl_edma_engine, not global.
Yes, it should be for each edma controller, I will define it in struct fsl_edma_engine. Thanks.


Best Regards,
Jingchang