linux-kernel - Re: [PATCH] xhci: remove unused variable

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Message-ID: <YGWj9KKtEd+sAdtH@kroah.com>
Date:   Thu, 1 Apr 2021 12:44:04 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Cc:     mathias.nyman@...el.com, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] xhci: remove unused variable

On Thu, Apr 01, 2021 at 06:17:15PM +0800, Jiapeng Chong wrote:
> Fix the following clang warning:
> 
> drivers/usb/host/xhci.c:1346:15: warning: variable ‘len’ set but not
> used [-Wunused-but-set-variable].
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
> ---
>  drivers/usb/host/xhci.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
> index 1975016..0ead09c 100644
> --- a/drivers/usb/host/xhci.c
> +++ b/drivers/usb/host/xhci.c
> @@ -1343,7 +1343,6 @@ static bool xhci_urb_temp_buffer_required(struct usb_hcd *hcd,
>  
>  static void xhci_unmap_temp_buf(struct usb_hcd *hcd, struct urb *urb)
>  {
> -	unsigned int len;
>  	unsigned int buf_len;
>  	enum dma_data_direction dir;
>  
> @@ -1359,10 +1358,9 @@ static void xhci_unmap_temp_buf(struct usb_hcd *hcd, struct urb *urb)
>  				 dir);
>  
>  	if (usb_urb_dir_in(urb))
> -		len = sg_pcopy_from_buffer(urb->sg, urb->num_sgs,
> -					   urb->transfer_buffer,
> -					   buf_len,
> -					   0);
> +		sg_pcopy_from_buffer(urb->sg, urb->num_sgs,
> +				     urb->transfer_buffer,
> +				     buf_len, 0);
>  
>  	urb->transfer_flags &= ~URB_DMA_MAP_SINGLE;
>  	kfree(urb->transfer_buffer);
> -- 
> 1.8.3.1
> 

Why resubmit this same change when I rejected it in the past?

{sigh}

greg k-h