From: Tsang-Shian Lin <th...@realtek.com>

[ Upstream commit b7573a0a27bfa8270dea9b145448f6884b7cacc1 ]

Reset the driver current tx read/write index to zero when inactiveps
nic out of sync with HW state. Wrong driver tx read/write index will
cause Tx fail.

Signed-off-by: Tsang-Shian Lin <th...@realtek.com>
Signed-off-by: Ping-Ke Shih <pks...@realtek.com>
Signed-off-by: Larry Finger <larry.fin...@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchu...@realtek.com>
Cc: Birming Chiu <birm...@realtek.com>
Cc: Shaofu <sha...@realtek.com>
Cc: Steven Ting <stevent...@realtek.com>
Signed-off-by: Kalle Valo <kv...@codeaurora.org>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
---
 drivers/net/wireless/realtek/rtlwifi/pci.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c 
b/drivers/net/wireless/realtek/rtlwifi/pci.c
index 08dc8919ef60..d7331225c5f3 100644
--- a/drivers/net/wireless/realtek/rtlwifi/pci.c
+++ b/drivers/net/wireless/realtek/rtlwifi/pci.c
@@ -1568,7 +1568,14 @@ int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw)
                                dev_kfree_skb_irq(skb);
                                ring->idx = (ring->idx + 1) % ring->entries;
                        }
+
+                       if (rtlpriv->use_new_trx_flow) {
+                               rtlpci->tx_ring[i].cur_tx_rp = 0;
+                               rtlpci->tx_ring[i].cur_tx_wp = 0;
+                       }
+
                        ring->idx = 0;
+                       ring->entries = rtlpci->txringcount[i];
                }
        }
        spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
-- 
2.14.1

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