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mt76: mmio: introduce mt76x02_check_tx_hang watchdog

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Port mt76x02_check_tx_hang watchdog from vendor driver in order to
perform a device reset when tx mac/dma logic hangs. Tx mac/dma stuck
has been observed when the device is heavy loaded or in a noisy
environment. Moreover introduce wdt delayed work in order to run
tx_hang watchdog. For the moment run mt76x02_check_tx_hang watchdog
just on mt76x2 devices since the issue has not been observed on mt76x0
driver yet

Signed-off-by: Lorenzo Bianconi <[email protected]>
This commit is contained in:
Lorenzo Bianconi
2018-12-28 16:16:41 +01:00
committed by Felix Fietkau
parent c78e317701
commit 3598046d01
8 changed files with 140 additions and 1 deletions
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mt76x02_debugfs.c
+2
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@@ -133,5 +133,7 @@ void mt76x02_init_debugfs(struct mt76x02_dev *dev)
read_txpower);
debugfs_create_devm_seqfile(dev->mt76.dev, "agc", dir, read_agc);
debugfs_create_u32("tx_hang_reset", 0400, dir, &dev->tx_hang_reset);
}
EXPORT_SYMBOL_GPL(mt76x02_init_debugfs);