@@ -2353,20 +2353,12 @@ void mt7996_mac_update_stats(struct mt7996_phy *phy)
void mt7996_mac_sta_rc_work(struct work_struct *work)
{
struct mt7996_dev *dev = container_of(work, struct mt7996_dev, rc_work);
- struct ieee80211_bss_conf *link_conf;
- struct ieee80211_link_sta *link_sta;
struct mt7996_sta_link *msta_link;
- struct mt7996_vif_link *link;
- struct mt76_vif_link *mlink;
- struct ieee80211_sta *sta;
struct ieee80211_vif *vif;
- struct mt7996_sta *msta;
struct mt7996_vif *mvif;
LIST_HEAD(list);
u32 changed;
- u8 link_id;
- rcu_read_lock();
spin_lock_bh(&dev->mt76.sta_poll_lock);
list_splice_init(&dev->sta_rc_list, &list);
@@ -2377,44 +2369,28 @@ void mt7996_mac_sta_rc_work(struct work_struct *work)
changed = msta_link->changed;
msta_link->changed = 0;
-
- sta = wcid_to_sta(&msta_link->wcid);
- link_id = msta_link->wcid.link_id;
- msta = msta_link->sta;
- mvif = msta->vif;
- vif = container_of((void *)mvif, struct ieee80211_vif, drv_priv);
-
- mlink = rcu_dereference(mvif->mt76.link[link_id]);
- if (!mlink)
- continue;
-
- link_sta = rcu_dereference(sta->link[link_id]);
- if (!link_sta)
- continue;
-
- link_conf = rcu_dereference(vif->link_conf[link_id]);
- if (!link_conf)
- continue;
+ mvif = msta_link->sta->vif;
+ vif = container_of((void *)mvif, struct ieee80211_vif,
+ drv_priv);
spin_unlock_bh(&dev->mt76.sta_poll_lock);
- link = (struct mt7996_vif_link *)mlink;
-
if (changed & (IEEE80211_RC_SUPP_RATES_CHANGED |
IEEE80211_RC_NSS_CHANGED |
IEEE80211_RC_BW_CHANGED))
mt7996_mcu_add_rate_ctrl(dev, msta_link->sta, vif,
- link_id, true);
+ msta_link->wcid.link_id,
+ true);
if (changed & IEEE80211_RC_SMPS_CHANGED)
- mt7996_mcu_set_fixed_field(dev, msta, NULL, link_id,
+ mt7996_mcu_set_fixed_field(dev, msta_link->sta, NULL,
+ msta_link->wcid.link_id,
RATE_PARAM_MMPS_UPDATE);
spin_lock_bh(&dev->mt76.sta_poll_lock);
}
spin_unlock_bh(&dev->mt76.sta_poll_lock);
- rcu_read_unlock();
}
void mt7996_mac_work(struct work_struct *work)
Since mt7996_mcu_add_rate_ctrl() and mt7996_mcu_set_fixed_field() can't run in atomic context, move RCU critical section in mt7996_mcu_add_rate_ctrl() and mt7996_mcu_set_fixed_field(). This patch fixes a 'sleep while atomic' issue in mt7996_mac_sta_rc_work(). Fixes: 0762bdd30279 ("wifi: mt76: mt7996: rework mt7996_mac_sta_rc_work to support MLO") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> --- drivers/net/wireless/mediatek/mt76/mt7996/mac.c | 38 +++++-------------------- 1 file changed, 7 insertions(+), 31 deletions(-)