linux-kernel - Re: [PATCH 01/28] dmaengine: use DMA_COMPLETE for dma completion status

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Message-ID: <Pine.LNX.4.64.1310242326500.2900@axis700.grange>
Date:	Thu, 24 Oct 2013 23:28:29 +0200 (CEST)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	Vinod Koul <vinod.koul@...el.com>
cc:	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>,
	Dan Williams <dan.j.williams@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org, linux@....linux.org.uk
Subject: Re: [PATCH 01/28] dmaengine: use DMA_COMPLETE for dma completion
 status

Hi Vinod

On Thu, 17 Oct 2013, Vinod Koul wrote:

> On Thu, Oct 17, 2013 at 04:27:55PM +0200, Sebastian Andrzej Siewior wrote:
> > On Thu, Oct 17, 2013 at 07:37:45AM +0530, Vinod Koul wrote:
> > > index 0bc7275..683c380 100644
> > > --- a/include/linux/dmaengine.h
> > > +++ b/include/linux/dmaengine.h
> > > @@ -45,16 +45,17 @@ static inline int dma_submit_error(dma_cookie_t cookie)
> > >  
> > >  /**
> > >   * enum dma_status - DMA transaction status
> > > - * @DMA_SUCCESS: transaction completed successfully
> > > + * @DMA_COMPLETE: transaction completed
> > >   * @DMA_IN_PROGRESS: transaction not yet processed
> > >   * @DMA_PAUSED: transaction is paused
> > >   * @DMA_ERROR: transaction failed
> > >   */
> > >  enum dma_status {
> > > -	DMA_SUCCESS,
> > > +	DMA_COMPLETE,
> > >  	DMA_IN_PROGRESS,
> > >  	DMA_PAUSED,
> > >  	DMA_ERROR,
> > > +	DMA_SUCCESS,
> > >  };
> > 
> > There are some drivers which compare against == or != DMA_SUCCESS. Shouldn't this
> > become
> >   enum dma_status {
> >  -	DMA_SUCCESS,
> >  +	DMA_COMPLETE = 0, DMA_SUCCESS = 0,
> >   	DMA_IN_PROGRESS,
> >   	DMA_PAUSED,
> >   	DMA_ERROR,
> >   };
> > 
> > so nothing breaks during the transition?
> Yes i missed it in first place update the patch to fix that

Are you planning to post a fixed version of this patch or you just fix it 
internally? Would be good to have it posted to be able to ack it and other 
relevant patches.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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