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wifi: mt76: mt7921: fix a potential scan no APs

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In multi-channel scenarios, the granted channel must be aborted before
station remove. Otherwise, the firmware will be put into a wrong state,
resulting in have chance to make subsequence scan no APs.
With this patch, the granted channel will be always aborted before
station remove.

Signed-off-by: Quan Zhou <quan.zhou@mediatek.com>
Reviewed-by: Sean Wang <sean.wang@mediatek.com>
Tested-by: David Ruth <druth@chromium.org>
Reviewed-by: David Ruth <druth@chromium.org>
Link: https://patch.msgid.link/1ac1ae779db86d4012199a24ea2ca74050ed4af6.1721300411.git.quan.zhou@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Quan Zhou
2024-07-18 21:49:09 +08:00
committed by Felix Fietkau
parent 512e26db35
commit 5ed54896b6
1 changed files with 4 additions and 3 deletions
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7
drivers/net/wireless/mediatek/mt76/mt7921/main.c
View File

@@ -360,9 +360,9 @@ void mt7921_roc_abort_sync(struct mt792x_dev *dev)
del_timer_sync(&phy->roc_timer);
cancel_work_sync(&phy->roc_work);
if (test_and_clear_bit(MT76_STATE_ROC, &phy->mt76->state))
ieee80211_iterate_active_interfaces(mt76_hw(dev),
IEEE80211_IFACE_ITER_RESUME_ALL,
mt7921_roc_iter, (void *)phy);
ieee80211_iterate_interfaces(mt76_hw(dev),
IEEE80211_IFACE_ITER_RESUME_ALL,
mt7921_roc_iter, (void *)phy);
}
EXPORT_SYMBOL_GPL(mt7921_roc_abort_sync);
@@ -858,6 +858,7 @@ void mt7921_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
struct mt792x_sta *msta = (struct mt792x_sta *)sta->drv_priv;
mt7921_roc_abort_sync(dev);
mt76_connac_free_pending_tx_skbs(&dev->pm, &msta->deflink.wcid);
mt76_connac_pm_wake(&dev->mphy, &dev->pm);