linux-kernel - [PATCH] xhci: Remove unused value len from xhci_unmap_temp

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Message-Id: <20210306120644.74406-1-zhangkun4jr@163.com>
Date:   Sat,  6 Mar 2021 20:06:44 +0800
From:   zhangkun4jr@....com
To:     Mathias Nyman <mathias.nyman@...el.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Zhang Kun <zhangkun@...rlc.com>
Subject: [PATCH] xhci: Remove unused value len from xhci_unmap_temp_buf

From: Zhang Kun <zhangkun@...rlc.com>

The value assigned to len by sg_pcopy_from_buffer() never used for
anything, so remove it.

Signed-off-by: Zhang Kun <zhangkun@...rlc.com>
---
 drivers/usb/host/xhci.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index bd27bd670104..6ebda89d476c 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1335,7 +1335,6 @@ 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;
 
@@ -1351,7 +1350,7 @@ 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,
+		sg_pcopy_from_buffer(urb->sg, urb->num_sgs,
 					   urb->transfer_buffer,
 					   buf_len,
 					   0);
-- 
2.17.1