iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mt76: mt7615: reset token when mac_reset happens

Browse Source 
[ Upstream commit a6275e934605646ef81b02d8d1164f21343149c9 ]

Reset token in mt7615_mac_reset_work() to avoid possible leakege.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ryder Lee 2020-12-11 02:51:38 +08:00 committed by Greg Kroah-Hartman
parent b9afcdcddf
commit aec5719681
3 changed files with 22 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/net/wireless/mediatek/mt76/mt7615/mac.c
View File

@ -2098,6 +2098,23 @@ void mt7615_dma_reset(struct mt7615_dev *dev)
}
EXPORT_SYMBOL_GPL(mt7615_dma_reset);
void mt7615_tx_token_put(struct mt7615_dev *dev)
{
struct mt76_txwi_cache *txwi;
int id;
spin_lock_bh(&dev->token_lock);
idr_for_each_entry(&dev->token, txwi, id) {
mt7615_txp_skb_unmap(&dev->mt76, txwi);
if (txwi->skb)
dev_kfree_skb_any(txwi->skb);
mt76_put_txwi(&dev->mt76, txwi);
}
spin_unlock_bh(&dev->token_lock);
idr_destroy(&dev->token);
}
EXPORT_SYMBOL_GPL(mt7615_tx_token_put);
void mt7615_mac_reset_work(struct work_struct *work)
{
struct mt7615_phy *phy2;
@ -2141,6 +2158,9 @@ void mt7615_mac_reset_work(struct work_struct *work)
mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_PDMA_STOPPED);
mt7615_tx_token_put(dev);
idr_init(&dev->token);
if (mt7615_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) {
mt7615_dma_reset(dev);

2
drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
View File

@ -619,7 +619,7 @@ int mt7615_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
struct mt76_tx_info *tx_info);
void mt7615_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e);
void mt7615_tx_token_put(struct mt7615_dev *dev);
void mt7615_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb);
void mt7615_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps);

12
drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
View File

@ -153,9 +153,7 @@ int mt7615_register_device(struct mt7615_dev *dev)
void mt7615_unregister_device(struct mt7615_dev *dev)
{
struct mt76_txwi_cache *txwi;
bool mcu_running;
int id;
mcu_running = mt7615_wait_for_mcu_init(dev);
@ -165,15 +163,7 @@ void mt7615_unregister_device(struct mt7615_dev *dev)
mt7615_mcu_exit(dev);
mt7615_dma_cleanup(dev);
spin_lock_bh(&dev->token_lock);
idr_for_each_entry(&dev->token, txwi, id) {
mt7615_txp_skb_unmap(&dev->mt76, txwi);
if (txwi->skb)
dev_kfree_skb_any(txwi->skb);
mt76_put_txwi(&dev->mt76, txwi);
}
spin_unlock_bh(&dev->token_lock);
idr_destroy(&dev->token);
mt7615_tx_token_put(dev);
tasklet_disable(&dev->irq_tasklet);