linux-kernel - Re: [PATCH -next] dmaengine: idxd: remove set but not used variable 'idxd

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Date:   Mon, 10 Feb 2020 09:35:35 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     YueHaibing <yuehaibing@...wei.com>, vkoul@...nel.org,
        dan.j.williams@...el.com
Cc:     dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] dmaengine: idxd: remove set but not used variable
 'idxd_cdev'



On 2/10/20 8:18 AM, YueHaibing wrote:
> drivers/dma/idxd/cdev.c: In function idxd_cdev_open:
> drivers/dma/idxd/cdev.c:77:20: warning:
>   variable idxd_cdev set but not used [-Wunused-but-set-variable]
> 
> commit 42d279f9137a ("dmaengine: idxd: add char driver to
> expose submission portal to userland") involed this.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>

Acked-by: Dave Jiang <dave.jiang@...el.com>

> ---
>   drivers/dma/idxd/cdev.c | 2 --
>   1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c
> index 1d73478..8dfdbe3 100644
> --- a/drivers/dma/idxd/cdev.c
> +++ b/drivers/dma/idxd/cdev.c
> @@ -74,12 +74,10 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp)
>   	struct idxd_device *idxd;
>   	struct idxd_wq *wq;
>   	struct device *dev;
> -	struct idxd_cdev *idxd_cdev;
>   
>   	wq = inode_wq(inode);
>   	idxd = wq->idxd;
>   	dev = &idxd->pdev->dev;
> -	idxd_cdev = &wq->idxd_cdev;
>   
>   	dev_dbg(dev, "%s called\n", __func__);
>   
>