[PATCH 6.11 623/695] wifi: mt76: mt7925: fix a potential association failure upon resuming

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



6.11-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Lo <michael.lo@xxxxxxxxxxxx>

commit 45064d19fd3af6aeb0887b35b5564927980cf150 upstream.

In multi-channel scenarios, the granted channel must be aborted before
suspending. Otherwise, the firmware will be put into a wrong state,
resulting in an association failure after resuming.

With this patch, the granted channel will be aborted before suspending
if necessary.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: c948b5da6bbe ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Signed-off-by: Michael Lo <michael.lo@xxxxxxxxxxxx>
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@xxxxxxxxxxxx>
Link: https://patch.msgid.link/20240902090054.15806-1-mingyen.hsieh@xxxxxxxxxxxx
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/wireless/mediatek/mt76/mt7925/main.c   |   15 +++++++++++++++
 drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h |    1 +
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c    |    2 ++
 3 files changed, 18 insertions(+)

--- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
@@ -439,6 +439,19 @@ static void mt7925_roc_iter(void *priv,
 	mt7925_mcu_abort_roc(phy, &mvif->bss_conf, phy->roc_token_id);
 }
 
+void mt7925_roc_abort_sync(struct mt792x_dev *dev)
+{
+	struct mt792x_phy *phy = &dev->phy;
+
+	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_interfaces(mt76_hw(dev),
+					     IEEE80211_IFACE_ITER_RESUME_ALL,
+					     mt7925_roc_iter, (void *)phy);
+}
+EXPORT_SYMBOL_GPL(mt7925_roc_abort_sync);
+
 void mt7925_roc_work(struct work_struct *work)
 {
 	struct mt792x_phy *phy;
@@ -1109,6 +1122,8 @@ static void mt7925_mac_link_sta_remove(s
 	msta = (struct mt792x_sta *)link_sta->sta->drv_priv;
 	mlink = mt792x_sta_to_link(msta, link_id);
 
+	mt7925_roc_abort_sync(dev);
+
 	mt76_connac_free_pending_tx_skbs(&dev->pm, &mlink->wcid);
 	mt76_connac_pm_wake(&dev->mphy, &dev->pm);
 
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h
@@ -307,6 +307,7 @@ int mt7925_mcu_set_roc(struct mt792x_phy
 		       enum mt7925_roc_req type, u8 token_id);
 int mt7925_mcu_abort_roc(struct mt792x_phy *phy, struct mt792x_bss_conf *mconf,
 			 u8 token_id);
+void mt7925_roc_abort_sync(struct mt792x_dev *dev);
 int mt7925_mcu_fill_message(struct mt76_dev *mdev, struct sk_buff *skb,
 			    int cmd, int *wait_seq);
 int mt7925_mcu_add_key(struct mt76_dev *dev, struct ieee80211_vif *vif,
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
@@ -449,6 +449,8 @@ static int mt7925_pci_suspend(struct dev
 	cancel_delayed_work_sync(&pm->ps_work);
 	cancel_work_sync(&pm->wake_work);
 
+	mt7925_roc_abort_sync(dev);
+
 	err = mt792x_mcu_drv_pmctrl(dev);
 	if (err < 0)
 		goto restore_suspend;






[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux