diff options
| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2020-07-03 10:15:52 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2020-07-21 19:01:17 +0200 |
| commit | 46dadc3104415ad834db1be3208311fd5f02e3ab (patch) | |
| tree | fbf66e2acf7e89a102ef16a925be17e3a4d0868c /drivers/net/wireless | |
| parent | de1f66bab9b7d9c1c80ae18bb1d85b699bbf8f44 (diff) | |
| download | linux-46dadc3104415ad834db1be3208311fd5f02e3ab.tar.bz2 | |
mt76: mt7615: run mt7615_mcu_set_roc holding mt76 mutex
Make sure to run mt7615_mcu_set_roc() holding mt76 mutex in order to
wake the device from low power state and avoid races
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7615/main.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c index c52b5c68ba97..47dca270150d 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c @@ -871,9 +871,11 @@ void mt7615_roc_work(struct work_struct *work) if (!test_and_clear_bit(MT76_STATE_ROC, &phy->mt76->state)) return; + mt7615_mutex_acquire(phy->dev); ieee80211_iterate_active_interfaces(phy->mt76->hw, IEEE80211_IFACE_ITER_RESUME_ALL, mt7615_roc_iter, phy); + mt7615_mutex_release(phy->dev); ieee80211_remain_on_channel_expired(phy->mt76->hw); } @@ -991,20 +993,24 @@ static int mt7615_remain_on_channel(struct ieee80211_hw *hw, if (test_and_set_bit(MT76_STATE_ROC, &phy->mt76->state)) return 0; + mt7615_mutex_acquire(phy->dev); + err = mt7615_mcu_set_roc(phy, vif, chan, duration); if (err < 0) { clear_bit(MT76_STATE_ROC, &phy->mt76->state); - return err; + goto out; } if (!wait_event_timeout(phy->roc_wait, phy->roc_grant, HZ)) { mt7615_mcu_set_roc(phy, vif, NULL, 0); clear_bit(MT76_STATE_ROC, &phy->mt76->state); - - return -ETIMEDOUT; + err = -ETIMEDOUT; } - return 0; +out: + mt7615_mutex_release(phy->dev); + + return err; } static int mt7615_cancel_remain_on_channel(struct ieee80211_hw *hw, @@ -1018,7 +1024,9 @@ static int mt7615_cancel_remain_on_channel(struct ieee80211_hw *hw, del_timer_sync(&phy->roc_timer); cancel_work_sync(&phy->roc_work); + mt7615_mutex_acquire(phy->dev); mt7615_mcu_set_roc(phy, vif, NULL, 0); + mt7615_mutex_release(phy->dev); return 0; } |