wifi: mt76: mt7996: fix traffic delay when switching back to working channel

[ Upstream commit 376200f095d0c3a7096199b336204698d7086279 ]

During scanning, UNI_CHANNEL_RX_PATH tag is necessary for the firmware to
properly stop and resume MAC TX queue. Without this tag, HW needs more time
to resume traffic when switching back to working channel.

Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices")
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20240816094635.2391-2-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
index 7c97140d8255a79c970c548d5589badcd8909539..15d880ef0d9222f8509c1ccb5cbc7cea5f72d348 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
@@ -307,6 +307,10 @@ int mt7996_set_channel(struct mt7996_phy *phy)
        if (ret)
                goto out;
 
+       ret = mt7996_mcu_set_chan_info(phy, UNI_CHANNEL_RX_PATH);
+       if (ret)
+               goto out;
+
        ret = mt7996_dfs_init_radar_detector(phy);
        mt7996_mac_cca_stats_reset(phy);