On Sat, May 15, 2021 at 04:46:47PM +0800, Zhihao Cheng wrote:
> Fix the following gcc warning:
>
> drivers/usb/host/xhci.c:1349:15: warning: variable ‘len’ set but not
> used [-Wunused-but-set-variable ]
>
> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: Zhihao Cheng <chengzhihao1@xxxxxxxxxx>
> ---
> drivers/usb/host/xhci.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
> index ca9385d22f68..b38a14ef2e15 100644
> --- a/drivers/usb/host/xhci.c
> +++ b/drivers/usb/host/xhci.c
> @@ -1346,7 +1346,6 @@ 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;
>
> @@ -1362,10 +1361,10 @@ 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);
> --
> 2.25.4
>
Isn't this the same thing that I have asked "please fix this by checking
the return value!" in the past?
Please do so.
greg k-h
