1 files changed, 10 insertions, 47 deletions

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c
index 12255682e890..4f7444331b07 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c
@@ -498,7 +498,8 @@ u16 rtl92ee_rx_desc_buff_remained_cnt(struct ieee80211_hw *hw, u8 queue_index)
 	if (!start_rx)
 		return 0;
 
-	remind_cnt = calc_fifo_space(read_point, write_point);
+	remind_cnt = calc_fifo_space(read_point, write_point,
+				     RTL_PCI_MAX_RX_COUNT);
 
 	if (remind_cnt == 0)
 		return 0;
@@ -548,7 +549,6 @@ static u16 get_desc_addr_fr_q_idx(u16 queue_index)
 
 u16 rtl92ee_get_available_desc(struct ieee80211_hw *hw, u8 q_idx)
 {
-	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	u16 point_diff = 0;
 	u16 current_tx_read_point = 0, current_tx_write_point = 0;
@@ -560,9 +560,9 @@ u16 rtl92ee_get_available_desc(struct ieee80211_hw *hw, u8 q_idx)
 	current_tx_write_point = (u16)((tmp_4byte) & 0x0fff);
 
 	point_diff = calc_fifo_space(current_tx_read_point,
-				     current_tx_write_point);
+				     current_tx_write_point,
+				     TX_DESC_NUM_92E);
 
-	rtlpci->tx_ring[q_idx].avl_desc = point_diff;
 	return point_diff;
 }
 
@@ -907,10 +907,6 @@ void rtl92ee_set_desc(struct ieee80211_hw *hw, u8 *pdesc, bool istx,
 		      u8 desc_name, u8 *val)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
-	u16 cur_tx_rp = 0;
-	u16 cur_tx_wp = 0;
-	static bool over_run;
-	u32 tmp = 0;
 	u8 q_idx = *val;
 	bool dma64 = rtlpriv->cfg->mod_params->dma64;
 
@@ -931,38 +927,12 @@ void rtl92ee_set_desc(struct ieee80211_hw *hw, u8 *pdesc, bool istx,
 				return;
 			}
 
+			/* make sure tx desc is available by caller */
 			ring->cur_tx_wp = ((ring->cur_tx_wp + 1) % max_tx_desc);
 
-			if (over_run) {
-				ring->cur_tx_wp = 0;
-				over_run = false;
-			}
-			if (ring->avl_desc > 1) {
-				ring->avl_desc--;
-
-				rtl_write_word(rtlpriv,
-					       get_desc_addr_fr_q_idx(q_idx),
-					       ring->cur_tx_wp);
-			}
-
-			if (ring->avl_desc < (max_tx_desc - 15)) {
-				u16 point_diff = 0;
-
-				tmp =
-				  rtl_read_dword(rtlpriv,
-						 get_desc_addr_fr_q_idx(q_idx));
-				cur_tx_rp = (u16)((tmp >> 16) & 0x0fff);
-				cur_tx_wp = (u16)(tmp & 0x0fff);
-
-				ring->cur_tx_wp = cur_tx_wp;
-				ring->cur_tx_rp = cur_tx_rp;
-				point_diff = ((cur_tx_rp > cur_tx_wp) ?
-					      (cur_tx_rp - cur_tx_wp) :
-					      (TX_DESC_NUM_92E - 1 -
-					       cur_tx_wp + cur_tx_rp));
-
-				ring->avl_desc = point_diff;
-			}
+			rtl_write_word(rtlpriv,
+				       get_desc_addr_fr_q_idx(q_idx),
+				       ring->cur_tx_wp);
 		}
 		break;
 		}
@@ -1044,13 +1014,12 @@ bool rtl92ee_is_tx_desc_closed(struct ieee80211_hw *hw, u8 hw_queue, u16 index)
 {
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
-	u16 read_point, write_point, available_desc_num;
+	u16 read_point, write_point;
 	bool ret = false;
 	static u8 stop_report_cnt;
 	struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
 
 	{
-		u16 point_diff = 0;
 		u16 cur_tx_rp, cur_tx_wp;
 		u32 tmpu32 = 0;
 
@@ -1060,18 +1029,12 @@ bool rtl92ee_is_tx_desc_closed(struct ieee80211_hw *hw, u8 hw_queue, u16 index)
 		cur_tx_rp = (u16)((tmpu32 >> 16) & 0x0fff);
 		cur_tx_wp = (u16)(tmpu32 & 0x0fff);
 
-		ring->cur_tx_wp = cur_tx_wp;
+		/* don't need to update ring->cur_tx_wp */
 		ring->cur_tx_rp = cur_tx_rp;
-		point_diff = ((cur_tx_rp > cur_tx_wp) ?
-			      (cur_tx_rp - cur_tx_wp) :
-			      (TX_DESC_NUM_92E - cur_tx_wp + cur_tx_rp));
-
-		ring->avl_desc = point_diff;
 	}
 
 	read_point = ring->cur_tx_rp;
 	write_point = ring->cur_tx_wp;
-	available_desc_num = ring->avl_desc;
 
 	if (write_point > read_point) {
 		if (index < write_point && index >= read_point)