linux-kernel - Re: [PATCH] dmaengine: mmp

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Message-ID: <20140129120941.GK10628@intel.com>
Date:	Wed, 29 Jan 2014 17:39:41 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
	Stephen Warren <swarren@...dia.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Joe Perches <joe@...ches.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Daniel Mack <zonque@...il.com>, Xiang Wang <wangx@...vell.com>,
	Zhangfei Gao <zhangfei.gao@...vell.com>
Subject: Re: [PATCH] dmaengine: mmp_pdma: fix mismerge

On Tue, Jan 28, 2014 at 09:45:38PM +0100, Arnd Bergmann wrote:
> The merge between 2b7f65b11d87f "mmp_pdma: Style neatening" and
> 8010dad55a0ab0 "dma: add dma_get_any_slave_channel(), for use in of_xlate()"
> caused a build error by leaving obsolete code in place:
> 
>   mmp_pdma.c: In function 'mmp_pdma_dma_xlate':
>   mmp_pdma.c:909:31: error: 'candidate' undeclared
>   mmp_pdma.c:912:3: error: label 'retry' used but not defined
>   mmp_pdma.c:901:24: warning: unused variable 'c' [-Wunused-variable]
> 
> This removes the extraneous lines.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
Applied thanks

--
~Vinod
> 
> diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
> index 32e58ee..69c6a12 100644
> --- a/drivers/dma/mmp_pdma.c
> +++ b/drivers/dma/mmp_pdma.c
> @@ -898,19 +898,11 @@ static struct dma_chan *mmp_pdma_dma_xlate(struct of_phandle_args *dma_spec,
>  {
>  	struct mmp_pdma_device *d = ofdma->of_dma_data;
>  	struct dma_chan *chan;
> -	struct mmp_pdma_chan *c;
>  
>  	chan = dma_get_any_slave_channel(&d->device);
>  	if (!chan)
>  		return NULL;
>  
> -	/* dma_get_slave_channel will return NULL if we lost a race between
> -	 * the lookup and the reservation */
> -	chan = dma_get_slave_channel(candidate);
> -
> -	if (!chan)
> -		goto retry;
> -
>  	to_mmp_pdma_chan(chan)->drcmr = dma_spec->args[0];
>  
>  	return chan;
> 

-- 
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