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wifi: mt76: mt7996: fix queue pause after scan due to wrong channel switch reason

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Previously, we used the IEEE80211_CONF_IDLE flag to avoid setting the
parking channel with the CH_SWITCH_NORMAL reason, which could trigger TX
emission before bootup CAC.

However, we found that this flag can be set after triggering scanning on a
connected station interface, and the reason CH_SWITCH_SCAN_BYPASS_DPD will
be used when switching back to the operating channel, which makes the
firmware failed to resume paused AC queues.

Seems that we should avoid relying on this flag after switching to single
multi-radio architecture. Instead, use the existence of chanctx as the
condition.

Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://patch.msgid.link/20260203155532.1098290-4-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
StanleyYP Wang 2026-02-03 23:55:32 +08:00 committed by Felix Fietkau
parent 169c83d3df
commit 1f9017d19d
1 changed files with 1 additions and 2 deletions
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3
drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
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@ -3929,8 +3929,7 @@ int mt7996_mcu_set_chan_info(struct mt7996_phy *phy, u16 tag)
if (phy->mt76->hw->conf.flags & IEEE80211_CONF_MONITOR)
req.switch_reason = CH_SWITCH_NORMAL;
else if (phy->mt76->offchannel ||
phy->mt76->hw->conf.flags & IEEE80211_CONF_IDLE)
else if (phy->mt76->offchannel || !phy->mt76->chanctx)
req.switch_reason = CH_SWITCH_SCAN_BYPASS_DPD;
else if (!cfg80211_reg_can_beacon(phy->mt76->hw->wiphy, chandef,
NL80211_IFTYPE_AP))