From: Lorenzo Bianconi lorenzo@kernel.org
[ Upstream commit fdb786cce0ef3615dcbb30d8baf06a1d4cb7a344 ]
mac80211/hostapd runs mt7615_set_channel with the same channel parameters sending multiple rdd commands overwriting the previous ones. This behaviour is causing tpt issues on dfs channels. Fix the issue checking new channel freq/width with the running one.
Fixes: 5dabdf71e94e ("mt76: mt7615: add multiple wiphy support to the dfs support code") Signed-off-by: Lorenzo Bianconi lorenzo@kernel.org Signed-off-by: Felix Fietkau nbd@nbd.name Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/wireless/mediatek/mt76/mt7615/main.c | 21 ++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c index 6586176c29af..f92ac9a916fc 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c @@ -218,6 +218,25 @@ static void mt7615_remove_interface(struct ieee80211_hw *hw, spin_unlock_bh(&dev->sta_poll_lock); }
+static void mt7615_init_dfs_state(struct mt7615_phy *phy) +{ + struct mt76_phy *mphy = phy->mt76; + struct ieee80211_hw *hw = mphy->hw; + struct cfg80211_chan_def *chandef = &hw->conf.chandef; + + if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL) + return; + + if (!(chandef->chan->flags & IEEE80211_CHAN_RADAR)) + return; + + if (mphy->chandef.chan->center_freq == chandef->chan->center_freq && + mphy->chandef.width == chandef->width) + return; + + phy->dfs_state = -1; +} + static int mt7615_set_channel(struct mt7615_phy *phy) { struct mt7615_dev *dev = phy->dev; @@ -229,7 +248,7 @@ static int mt7615_set_channel(struct mt7615_phy *phy) mutex_lock(&dev->mt76.mutex); set_bit(MT76_RESET, &phy->mt76->state);
- phy->dfs_state = -1; + mt7615_init_dfs_state(phy); mt76_set_channel(phy->mt76);
ret = mt7615_mcu_set_chan_info(phy, MCU_EXT_CMD_CHANNEL_SWITCH);