gitops/mt76
1
0
Fork 0
mirror of https://github.com/outbackdingo/mt76.git synced 2026-10-24 13:26:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

mt76: mt76x02: improve tx hang detection

Browse Source 
Instead of checking if any queue has not made progress since the last run,
only trigger hang detection if one of the queues has not made any progress
in 10 subsequent runs. This should reduce false positive firmware restarts

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2022-01-31 15:05:57 +01:00
parent 20d1fed838
commit 9b2ac62d6f
2 changed files with 12 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mt76x02_mmio.c
+11 -19
View File
@@ -348,18 +348,20 @@ static bool mt76x02_tx_hang(struct mt76x02_dev *dev)
for (i = 0; i < 4; i++) {
q = dev->mphy.q_tx[i];
if (!q->queued)
continue;
prev_dma_idx = dev->mt76.tx_dma_idx[i];
dma_idx = readl(&q->regs->dma_idx);
dev->mt76.tx_dma_idx[i] = dma_idx;
if (prev_dma_idx == dma_idx)
break;
if (!q->queued || prev_dma_idx != dma_idx) {
dev->tx_hang_check[i] = 0;
continue;
}
if (++dev->tx_hang_check[i] >= MT_TX_HANG_TH)
return true;
}
return i < 4;
return false;
}
static void mt76x02_key_sync(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
@@ -530,23 +532,13 @@ static void mt76x02_check_tx_hang(struct mt76x02_dev *dev)
if (test_bit(MT76_RESTART, &dev->mphy.state))
return;
if (mt76x02_tx_hang(dev)) {
if (++dev->tx_hang_check >= MT_TX_HANG_TH)
goto restart;
} else {
dev->tx_hang_check = 0;
}
if (!mt76x02_tx_hang(dev) && !dev->mcu_timeout)
return;
if (dev->mcu_timeout)
goto restart;
return;
restart:
mt76x02_watchdog_reset(dev);
dev->tx_hang_reset++;
dev->tx_hang_check = 0;
memset(dev->tx_hang_check, 0, sizeof(dev->tx_hang_check));
memset(dev->mt76.tx_dma_idx, 0xff,
sizeof(dev->mt76.tx_dma_idx));
}