[PATCH] staging: fix ignoring return value warning

[Greg Kroah-Hartman]

On Sun, Feb 07, 2021 at 05:23:28PM +0800, Youling Tang wrote:
> Fix the below ignoring return value warning for device_reset.
> 
> drivers/staging/mt7621-dma/mtk-hsdma.c:685:2: warning: ignoring return value
> of function declared with 'warn_unused_result' attribute [-Wunused-result]
>         device_reset(&pdev->dev);
>         ^~~~~~~~~~~~ ~~~~~~~~~~
> drivers/staging/ralink-gdma/ralink-gdma.c:836:2: warning: ignoring return value
> of function declared with 'warn_unused_result' attribute [-Wunused-result]
>         device_reset(&pdev->dev);
>         ^~~~~~~~~~~~ ~~~~~~~~~~
> 
> Signed-off-by: Youling Tang <tangyouling at loongson.cn>
> ---
>  drivers/staging/mt7621-dma/mtk-hsdma.c    | 6 +++++-
>  drivers/staging/ralink-gdma/ralink-gdma.c | 6 +++++-
>  2 files changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/mt7621-dma/mtk-hsdma.c b/drivers/staging/mt7621-dma/mtk-hsdma.c
> index bc4bb43..d4ffa52 100644
> --- a/drivers/staging/mt7621-dma/mtk-hsdma.c
> +++ b/drivers/staging/mt7621-dma/mtk-hsdma.c
> @@ -682,7 +682,11 @@ static int mtk_hsdma_probe(struct platform_device *pdev)
>  		return ret;
>  	}
>  
> -	device_reset(&pdev->dev);
> +	ret = device_reset(&pdev->dev);
> +	if (ret) {
> +		dev_err(&pdev->dev, "failed to reset device\n");
> +		return ret;
> +	}
>  
>  	dd = &hsdma->ddev;
>  	dma_cap_set(DMA_MEMCPY, dd->cap_mask);
> diff --git a/drivers/staging/ralink-gdma/ralink-gdma.c b/drivers/staging/ralink-gdma/ralink-gdma.c
> index 655df31..df99c47 100644
> --- a/drivers/staging/ralink-gdma/ralink-gdma.c
> +++ b/drivers/staging/ralink-gdma/ralink-gdma.c
> @@ -833,7 +833,11 @@ static int gdma_dma_probe(struct platform_device *pdev)
>  		return ret;
>  	}
>  
> -	device_reset(&pdev->dev);
> +	ret = device_reset(&pdev->dev);
> +	if (ret) {
> +		dev_err(&pdev->dev, "failed to reset device\n");
> +		return ret;
> +	}
>  
>  	dd = &dma_dev->ddev;
>  	dma_cap_set(DMA_MEMCPY, dd->cap_mask);
> -- 
> 2.1.0
> 


Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
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to these common problems, but in order to save his sanity (he kept
writing the same thing over and over, yet to different people), I was
created.  Hopefully you will not take offence and will fix the problem
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