| developer | 4f4219d | 2023-05-17 18:09:47 +0800 | [diff] [blame^] | 1 | From 11737f3523ed3dff2a2ed35b658f562478022896 Mon Sep 17 00:00:00 2001 |
| 2 | From: StanleyYP Wang <StanleyYP.Wang@mediatek.com> |
| 3 | Date: Wed, 17 May 2023 17:34:55 +0800 |
| 4 | Subject: [PATCH] wifi: mt76: mt7915: fix DFS CAC tx emission issue after |
| 5 | interface down up |
| 6 | |
| 7 | FW's channel state is set during the first wifi interface setup. If the switch reason for |
| 8 | setting the tx/rx path during second-time wifi interface setup is CH_SWITCH_NORMAL, |
| 9 | then the FW would perform runtime dpd channel calibration during DFS CAC, which leads to |
| 10 | tx emission. Therefore, in order to bypass tx calibration during DFS CAC, set the switch reason |
| 11 | to CH_SWITCH_DFS whenever chandef is set to DFS channel. |
| 12 | |
| 13 | Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> |
| 14 | --- |
| 15 | mt7915/mcu.c | 6 +++--- |
| 16 | 1 file changed, 3 insertions(+), 3 deletions(-) |
| 17 | |
| 18 | diff --git a/mt7915/mcu.c b/mt7915/mcu.c |
| 19 | index a9f8a88..a759214 100644 |
| 20 | --- a/mt7915/mcu.c |
| 21 | +++ b/mt7915/mcu.c |
| 22 | @@ -2773,12 +2773,12 @@ int mt7915_mcu_set_chan_info(struct mt7915_phy *phy, int cmd) |
| 23 | if (mt76_connac_spe_idx(phy->mt76->antenna_mask)) |
| 24 | req.tx_path_num = fls(phy->mt76->antenna_mask); |
| 25 | |
| 26 | - if (cmd == MCU_EXT_CMD(SET_RX_PATH) || |
| 27 | - dev->mt76.hw->conf.flags & IEEE80211_CONF_MONITOR) |
| 28 | + if (dev->mt76.hw->conf.flags & IEEE80211_CONF_MONITOR) |
| 29 | req.switch_reason = CH_SWITCH_NORMAL; |
| 30 | else if (phy->mt76->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) |
| 31 | req.switch_reason = CH_SWITCH_SCAN_BYPASS_DPD; |
| 32 | - else if (!cfg80211_reg_can_beacon(phy->mt76->hw->wiphy, chandef, |
| 33 | + else if (cfg80211_chandef_valid(chandef) && |
| 34 | + !cfg80211_reg_can_beacon(phy->mt76->hw->wiphy, chandef, |
| 35 | NL80211_IFTYPE_AP)) |
| 36 | req.switch_reason = CH_SWITCH_DFS; |
| 37 | else |
| 38 | -- |
| 39 | 2.18.0 |
| 40 | |