diff options
| author | Leon Yen <leon.yen@mediatek.com> | 2024-03-07 17:46:32 +0800 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2024-05-02 12:44:51 +0200 |
| commit | ecf0b2b8a37c8464186620bef37812a117ff6366 (patch) | |
| tree | 6fb03b203f4e339683e7f38a84fffc1c215189f7 /drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c | |
| parent | 4a40fcbfe3ab4846670b59b81c914ed7e7dac2b3 (diff) | |
wifi: mt76: mt7921s: fix potential hung tasks during chip recovery
During chip recovery (e.g. chip reset), there is a possible situation that
kernel worker reset_work is holding the lock and waiting for kernel thread
stat_worker to be parked, while stat_worker is waiting for the release of
the same lock.
It causes a deadlock resulting in the dumping of hung tasks messages and
possible rebooting of the device.
This patch prevents the execution of stat_worker during the chip recovery.
Signed-off-by: Leon Yen <leon.yen@mediatek.com>
Signed-off-by: Ming Yen Hsieh <MingYen.Hsieh@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c index c866144ff061..031ba9aaa4e2 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c @@ -64,7 +64,6 @@ int mt7921e_mac_reset(struct mt792x_dev *dev) mt76_wr(dev, dev->irq_map->host_irq_enable, 0); mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0); - set_bit(MT76_RESET, &dev->mphy.state); set_bit(MT76_MCU_RESET, &dev->mphy.state); wake_up(&dev->mt76.mcu.wait); skb_queue_purge(&dev->mt76.mcu.res_q); @@ -115,7 +114,6 @@ int mt7921e_mac_reset(struct mt792x_dev *dev) err = __mt7921_start(&dev->phy); out: - clear_bit(MT76_RESET, &dev->mphy.state); local_bh_disable(); napi_enable(&dev->mt76.tx_napi); |