linux-kernel - [PATCH] staging: gdm72xx: use list_move instead of list_del/list

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Date:	Thu, 6 Sep 2012 12:36:49 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	gregkh@...uxfoundation.org
Cc:	yongjun_wei@...ndmicro.com.cn, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] staging: gdm72xx: use list_move instead of list_del/list_add

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

Using list_move() instead of list_del() + list_add().

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/staging/gdm72xx/gdm_usb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/gdm72xx/gdm_usb.c b/drivers/staging/gdm72xx/gdm_usb.c
index d48d49c..b74442f 100644
--- a/drivers/staging/gdm72xx/gdm_usb.c
+++ b/drivers/staging/gdm72xx/gdm_usb.c
@@ -189,8 +189,7 @@ static struct usb_rx *get_rx_struct(struct rx_cxt *rx)
 /* Before this function is called, spin lock should be locked. */
 static void put_rx_struct(struct rx_cxt *rx, struct usb_rx *r)
 {
-	list_del(&r->list);
-	list_add(&r->list, &rx->free_list);
+	list_move(&r->list, &rx->free_list);
 }
 
 static int init_usb(struct usbwm_dev *udev)

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