Use list_first_entry*() instead of container_of() to simplify the code.
Signed-off-by: Geliang Tang <geliangtang@xxxxxxx>
---
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
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