From 10f73bb3938f7c5cee78b8bdb7dca328c639c9e6 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Tue, 27 Aug 2024 11:30:02 +0200 Subject: wifi: mt76: mt7915: reset the device after MCU timeout On MT7915, MCU hangs do not trigger watchdog interrupts, so they can only be detected through MCU message timeouts. Ensure that the hardware gets restarted when that happens in order to prevent a permanent stuck state. Link: https://patch.msgid.link/20240827093011.18621-15-nbd@nbd.name Signed-off-by: Felix Fietkau --- drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/net/wireless') diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index 0cde1b3c7d41..81375b5d0021 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -157,12 +157,21 @@ static int mt7915_mcu_parse_response(struct mt76_dev *mdev, int cmd, struct sk_buff *skb, int seq) { + struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76); struct mt76_connac2_mcu_rxd *rxd; int ret = 0; if (!skb) { dev_err(mdev->dev, "Message %08x (seq %d) timeout\n", cmd, seq); + + if (!test_and_set_bit(MT76_MCU_RESET, &dev->mphy.state)) { + dev->recovery.restart = true; + wake_up(&dev->mt76.mcu.wait); + queue_work(dev->mt76.wq, &dev->reset_work); + wake_up(&dev->reset_wait); + } + return -ETIMEDOUT; } -- cgit v1.2.3-70-g09d2