Return-path: Received: from m50-133.163.com ([123.125.50.133]:37148 "EHLO m50-133.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752254AbcBWAjI (ORCPT ); Mon, 22 Feb 2016 19:39:08 -0500 From: Geliang Tang To: Larry Finger , Jes Sorensen , Greg Kroah-Hartman , Julian Calaby Cc: Geliang Tang , linux-wireless@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Subject: [PATCH] staging: rtl8723au: use list_first_entry* Date: Tue, 23 Feb 2016 08:38:01 +0800 Message-Id: (sfid-20160223_013914_020914_9F47F8EA) Sender: linux-wireless-owner@vger.kernel.org List-ID: Use list_first_entry*() instead of container_of() to simplify the code. Signed-off-by: Geliang Tang --- drivers/staging/rtl8723au/core/rtw_recv.c | 49 +++++++++---------------------- drivers/staging/rtl8723au/core/rtw_xmit.c | 26 +++++----------- 2 files changed, 22 insertions(+), 53 deletions(-) diff --git a/drivers/staging/rtl8723au/core/rtw_recv.c b/drivers/staging/rtl8723au/core/rtw_recv.c index 0a7741c..b095d09 100644 --- a/drivers/staging/rtl8723au/core/rtw_recv.c +++ b/drivers/staging/rtl8723au/core/rtw_recv.c @@ -104,21 +104,14 @@ void _rtw_free_recv_priv23a(struct recv_priv *precvpriv) struct recv_frame *rtw_alloc_recvframe23a(struct rtw_queue *pfree_recv_queue) { struct recv_frame *pframe; - struct list_head *plist, *phead; struct rtw_adapter *padapter; struct recv_priv *precvpriv; spin_lock_bh(&pfree_recv_queue->lock); - if (list_empty(&pfree_recv_queue->queue)) - pframe = NULL; - else { - phead = get_list_head(pfree_recv_queue); - - plist = phead->next; - - pframe = container_of(plist, struct recv_frame, list); - + pframe = list_first_entry_or_null(&pfree_recv_queue->queue, + struct recv_frame, list); + if (pframe) { list_del_init(&pframe->list); padapter = pframe->adapter; if (padapter) { @@ -243,25 +236,17 @@ int rtw_enqueue_recvbuf23a(struct recv_buf *precvbuf, struct rtw_queue *queue) return _SUCCESS; } -struct recv_buf *rtw_dequeue_recvbuf23a (struct rtw_queue *queue) +struct recv_buf *rtw_dequeue_recvbuf23a(struct rtw_queue *queue) { unsigned long irqL; struct recv_buf *precvbuf; - struct list_head *plist, *phead; spin_lock_irqsave(&queue->lock, irqL); - if (list_empty(&queue->queue)) { - precvbuf = NULL; - } else { - phead = get_list_head(queue); - - plist = phead->next; - - precvbuf = container_of(plist, struct recv_buf, list); - + precvbuf = list_first_entry_or_null(&queue->queue, + struct recv_buf, list); + if (precvbuf) list_del_init(&precvbuf->list); - } spin_unlock_irqrestore(&queue->lock, irqL); @@ -1079,22 +1064,17 @@ static int validate_recv_ctrl_frame(struct rtw_adapter *padapter, if ((psta->state & WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap & CHKBIT(psta->aid))) { - struct list_head *xmitframe_plist, *xmitframe_phead; + struct list_head *xmitframe_phead; struct xmit_frame *pxmitframe; struct xmit_priv *pxmitpriv = &padapter->xmitpriv; spin_lock_bh(&pxmitpriv->lock); xmitframe_phead = get_list_head(&psta->sleep_q); - xmitframe_plist = xmitframe_phead->next; - - if (!list_empty(xmitframe_phead)) { - pxmitframe = container_of(xmitframe_plist, - struct xmit_frame, - list); - - xmitframe_plist = xmitframe_plist->next; - + pxmitframe = list_first_entry_or_null(xmitframe_phead, + struct xmit_frame, + list); + if (pxmitframe) { list_del_init(&pxmitframe->list); psta->sleepq_len--; @@ -1542,7 +1522,7 @@ struct recv_frame *recvframe_defrag(struct rtw_adapter *adapter, struct recv_frame *recvframe_defrag(struct rtw_adapter *adapter, struct rtw_queue *defrag_q) { - struct list_head *plist, *phead; + struct list_head *phead; u8 wlanhdr_offset; u8 curfragnum; struct recv_frame *pnfhdr, *ptmp; @@ -1554,8 +1534,7 @@ struct recv_frame *recvframe_defrag(struct rtw_adapter *adapter, pfree_recv_queue = &adapter->recvpriv.free_recv_queue; phead = get_list_head(defrag_q); - plist = phead->next; - prframe = container_of(plist, struct recv_frame, list); + prframe = list_first_entry(phead, struct recv_frame, list); list_del_init(&prframe->list); skb = prframe->pkt; diff --git a/drivers/staging/rtl8723au/core/rtw_xmit.c b/drivers/staging/rtl8723au/core/rtw_xmit.c index b82b182..3de40cf 100644 --- a/drivers/staging/rtl8723au/core/rtw_xmit.c +++ b/drivers/staging/rtl8723au/core/rtw_xmit.c @@ -1443,24 +1443,18 @@ Must be very very cautious... */ static struct xmit_frame *rtw_alloc_xmitframe(struct xmit_priv *pxmitpriv) { - struct xmit_frame *pxframe = NULL; - struct list_head *plist, *phead; + struct xmit_frame *pxframe; struct rtw_queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue; spin_lock_bh(&pfree_xmit_queue->lock); - if (list_empty(&pfree_xmit_queue->queue)) { + pxframe = list_first_entry_or_null(&pfree_xmit_queue->queue, + struct xmit_frame, list); + if (!pxframe) { RT_TRACE(_module_rtl871x_xmit_c_, _drv_info_, "rtw_alloc_xmitframe:%d\n", pxmitpriv->free_xmitframe_cnt); - pxframe = NULL; } else { - phead = get_list_head(pfree_xmit_queue); - - plist = phead->next; - - pxframe = container_of(plist, struct xmit_frame, list); - list_del_init(&pxframe->list); pxmitpriv->free_xmitframe_cnt--; RT_TRACE(_module_rtl871x_xmit_c_, _drv_info_, @@ -1477,22 +1471,18 @@ static struct xmit_frame *rtw_alloc_xmitframe(struct xmit_priv *pxmitpriv) struct xmit_frame *rtw_alloc_xmitframe23a_ext(struct xmit_priv *pxmitpriv) { - struct xmit_frame *pxframe = NULL; - struct list_head *plist, *phead; + struct xmit_frame *pxframe; struct rtw_queue *queue = &pxmitpriv->free_xframe_ext_queue; spin_lock_bh(&queue->lock); - if (list_empty(&queue->queue)) { + pxframe = list_first_entry_or_null(&queue->queue, + struct xmit_frame, list); + if (!pxframe) { RT_TRACE(_module_rtl871x_xmit_c_, _drv_info_, "rtw_alloc_xmitframe23a_ext:%d\n", pxmitpriv->free_xframe_ext_cnt); - pxframe = NULL; } else { - phead = get_list_head(queue); - plist = phead->next; - pxframe = container_of(plist, struct xmit_frame, list); - list_del_init(&pxframe->list); pxmitpriv->free_xframe_ext_cnt--; RT_TRACE(_module_rtl871x_xmit_c_, _drv_info_, -- 2.5.0