wifi: rtw89: 8852b: change debug mask of message of no TX resource

8852B has smaller TX FIFO than others in WiFi chip, so it would be buffer
full frequently, but it doesn't affect TX performance. However, it shows
verbose debug messages with RTW89_DBG_UNEXP mask that is used to indicate
abnormal behavior, so change debug mask to RTW89_DBG_TXRX for 8852B.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221108014230.11068-1-pkshih@realtek.com

diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c
index 07a2e23..7aa0af1 100644 (file)
--- a/drivers/net/wireless/realtek/rtw89/pci.c
+++ b/drivers/net/wireless/realtek/rtw89/pci.c
@@ -971,8 +971,10 @@ static u32 __rtw89_pci_check_and_reclaim_tx_resource(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;
+       const struct rtw89_chip_info *chip = rtwdev->chip;
        u32 bd_cnt, wd_cnt, min_cnt = 0;
        struct rtw89_pci_rx_ring *rx_ring;
+       enum rtw89_debug_mask debug_mask;
        u32 cnt;
 
        rx_ring = &rtwpci->rx_rings[RTW89_RXCH_RPQ];
@@ -996,10 +998,20 @@ static u32 __rtw89_pci_check_and_reclaim_tx_resource(struct rtw89_dev *rtwdev,
        bd_cnt = rtw89_pci_get_avail_txbd_num(tx_ring);
        wd_cnt = wd_ring->curr_num;
        min_cnt = min(bd_cnt, wd_cnt);
-       if (min_cnt == 0)
-               rtw89_debug(rtwdev, rtwpci->low_power ? RTW89_DBG_TXRX : RTW89_DBG_UNEXP,
+       if (min_cnt == 0) {
+               /* This message can be frequently shown in low power mode or
+                * high traffic with 8852B, and we have recognized it as normal
+                * behavior, so print with mask RTW89_DBG_TXRX in these situations.
+                */
+               if (rtwpci->low_power || chip->chip_id == RTL8852B)
+                       debug_mask = RTW89_DBG_TXRX;
+               else
+                       debug_mask = RTW89_DBG_UNEXP;
+
+               rtw89_debug(rtwdev, debug_mask,
                            "still no tx resource after reclaim: wd_cnt=%d bd_cnt=%d\n",
                            wd_cnt, bd_cnt);
+       }
 
 out_unlock:
        spin_unlock_bh(&rtwpci->trx_lock);