From: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
[ Upstream commit 4a29213cd775cabcbe395229d175903accedbb9d ]
Number of TX resource must be minimum of TX_BD and TX_WD. Only considering
TX_BD could drop TX packets pulled from mac80211 if TX_WD is unavailable.
Fixes: 52edbb9fb78a ("rtw89: ps: access TX/RX rings via another registers in low power mode")
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220824063312.15784-2-pkshih@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/realtek/rtw89/pci.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c
index 8a093e1cb328..7bb1b494c5d1 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.c
+++ b/drivers/net/wireless/realtek/rtw89/pci.c
@@ -926,10 +926,12 @@ u32 __rtw89_pci_check_and_reclaim_tx_resource_noio(struct rtw89_dev *rtwdev,
{
struct rtw89_pci *rtwpci = (struct rtw89_pci *)rtwdev->priv;
struct rtw89_pci_tx_ring *tx_ring = &rtwpci->tx_rings[txch];
+ struct rtw89_pci_tx_wd_ring *wd_ring = &tx_ring->wd_ring;
u32 cnt;
spin_lock_bh(&rtwpci->trx_lock);
cnt = rtw89_pci_get_avail_txbd_num(tx_ring);
+ cnt = min(cnt, wd_ring->curr_num);
spin_unlock_bh(&rtwpci->trx_lock);
return cnt;
--
2.35.1
