diff options
| author | Felix Fietkau <nbd@nbd.name> | 2020-02-16 18:08:58 +0300 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2020-05-12 20:52:27 +0300 |
| commit | fd6c2dfa49b762ffe773a835ba62fa692df4c1b0 (patch) | |
| tree | d33462a14951b7e912563091677a781c67a31c48 /drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c | |
| parent | 5bb4e125815aa769a7d2ab7dc203593925bba0ba (diff) | |
mt76: mt76x02: fix handling MCU timeouts during hw restart
If a MCU timeout occurs before a hw restart completes, another hw restart
is scheduled, and the station state gets corrupted.
To speed up dealing with that, do not issue any MCU commands after the first
timeout, and defer handling timeouts until the reset has completed.
Also ignore errors in MCU commands during start/config to avoid making user
space fail on this condition. If it happens, another restart is scheduled
quickly, and that usually recovers the hardware properly.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c index 7dcc5d342e9f..7e389dbccfeb 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c @@ -520,6 +520,7 @@ static void mt76x02_watchdog_reset(struct mt76x02_dev *dev) } if (restart) { + set_bit(MT76_RESTART, &dev->mphy.state); mt76x02_mcu_function_select(dev, Q_SELECT, 1); ieee80211_restart_hw(dev->mt76.hw); } else { @@ -528,8 +529,23 @@ static void mt76x02_watchdog_reset(struct mt76x02_dev *dev) } } +void mt76x02_reconfig_complete(struct ieee80211_hw *hw, + enum ieee80211_reconfig_type reconfig_type) +{ + struct mt76x02_dev *dev = hw->priv; + + if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART) + return; + + clear_bit(MT76_RESTART, &dev->mphy.state); +} +EXPORT_SYMBOL_GPL(mt76x02_reconfig_complete); + static void mt76x02_check_tx_hang(struct mt76x02_dev *dev) { + if (test_bit(MT76_RESTART, &dev->mphy.state)) + return; + if (mt76x02_tx_hang(dev)) { if (++dev->tx_hang_check >= MT_TX_HANG_TH) goto restart; |