linux-kernel - Re: [PATCH -next] dmaengine: sf-pdma: Remove set but not used variable "desc"

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Date:   Fri, 18 Sep 2020 12:40:46 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Liu Shixin <liushixin2@...wei.com>
Cc:     Green Wan <green.wan@...ive.com>,
        Dan Williams <dan.j.williams@...el.com>,
        dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] dmaengine: sf-pdma: Remove set but not used
 variable "desc"

On 17-09-20, 15:17, Liu Shixin wrote:
> Fixes gcc '-Wunused-but-set-variable' warning:
> 
> drivers/dma/sf-pdma/sf-pdma.c: In function 'sf_pdma_donebh_tasklet':
> drivers/dma/sf-pdma/sf-pdma.c:287:23: warning: unused variable 'desc' [-Wunused-variable]
> 
> After commit 8f6b6d060602 ("dmaengine: sf-pdma: Fix an error that calls callback twice"),
> variable 'desc' is never used. Remove it to avoid build warning.

This was already reported by SFR and patch posted, so picked that one

> 
> Signed-off-by: Liu Shixin <liushixin2@...wei.com>
> ---
>  drivers/dma/sf-pdma/sf-pdma.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/dma/sf-pdma/sf-pdma.c b/drivers/dma/sf-pdma/sf-pdma.c
> index 754994087e5f..1e66c6990d81 100644
> --- a/drivers/dma/sf-pdma/sf-pdma.c
> +++ b/drivers/dma/sf-pdma/sf-pdma.c
> @@ -284,7 +284,6 @@ static void sf_pdma_free_desc(struct virt_dma_desc *vdesc)
>  static void sf_pdma_donebh_tasklet(unsigned long arg)
>  {
>  	struct sf_pdma_chan *chan = (struct sf_pdma_chan *)arg;
> -	struct sf_pdma_desc *desc = chan->desc;
>  	unsigned long flags;
>  
>  	spin_lock_irqsave(&chan->lock, flags);
> -- 
> 2.25.1

-- 
~Vinod