linux-kernel - [PATCH] staging: gdm72xx: use list_move_tail instead of list_del/list_add

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Message-ID: <CAPgLHd9knKyh2VkUL4D8TWvCZ0nHzMXvQ6Rn7zdkmaXsbcq9OQ@mail.gmail.com>
Date:	Wed, 5 Sep 2012 14:49:15 +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_tail instead of list_del/list_add_tail

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

Using list_move_tail() instead of list_del() + list_add_tail().

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..04820ce 100644
--- a/drivers/staging/gdm72xx/gdm_usb.c
+++ b/drivers/staging/gdm72xx/gdm_usb.c
@@ -180,8 +180,7 @@ static struct usb_rx *get_rx_struct(struct rx_cxt *rx)
 	}
 
 	r = list_entry(rx->free_list.next, struct usb_rx, list);
-	list_del(&r->list);
-	list_add_tail(&r->list, &rx->used_list);
+	list_move_tail(&r->list, &rx->used_list);
 
 	return r;
 }


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