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mt76: add missing lock configuring coverage class 

Coverage class callback can potentially run in parallel with other
routines (e.g. mt7615_set_channel) that configures timing registers.
Run coverage class callback holding mt76 mutex

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2020-06-02 22:26:38 +02:00 committed by Felix Fietkau
parent 71d4364abd
commit 2cb002e3c2
3 changed files with 8 additions and 0 deletions
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2
drivers/net/wireless/mediatek/mt76/mt7603/main.c
View File

@ -642,8 +642,10 @@ mt7603_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class)
{
struct mt7603_dev *dev = hw->priv;
mutex_lock(&dev->mt76.mutex);
dev->coverage_class = max_t(s16, coverage_class, 0);
mt7603_mac_set_timing(dev);
mutex_unlock(&dev->mt76.mutex);
}
static void mt7603_tx(struct ieee80211_hw *hw,

3
drivers/net/wireless/mediatek/mt76/mt7615/main.c
View File

@ -735,9 +735,12 @@ static void
mt7615_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class)
{
struct mt7615_phy *phy = mt7615_hw_phy(hw);
struct mt7615_dev *dev = phy->dev;
mutex_lock(&dev->mt76.mutex);
phy->coverage_class = max_t(s16, coverage_class, 0);
mt7615_mac_set_timing(phy);
mutex_unlock(&dev->mt76.mutex);
}
static int

3
drivers/net/wireless/mediatek/mt76/mt7915/main.c
View File

@ -716,9 +716,12 @@ static void
mt7915_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class)
{
struct mt7915_phy *phy = mt7915_hw_phy(hw);
struct mt7915_dev *dev = phy->dev;
mutex_lock(&dev->mt76.mutex);
phy->coverage_class = max_t(s16, coverage_class, 0);
mt7915_mac_set_timing(phy);
mutex_unlock(&dev->mt76.mutex);
}
static int