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mt76: mt7921: fix crash when startup fails.

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If the nic fails to start, it is possible that the
reset_work has already been scheduled.  Ensure the
work item is canceled so we do not have use-after-free
crash in case cleanup is called before the work item
is executed.

This fixes crash on my x86_64 apu2 when mt7921k radio
fails to work.  Radio still fails, but OS does not
crash.

Signed-off-by: Ben Greear <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Ben Greear
2022-01-14 14:58:32 +01:00
committed by Felix Fietkau
parent 3c2cc90343
commit f7f6c6dcc6
1 changed files with 1 additions and 0 deletions
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mt7921/main.c
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@@ -272,6 +272,7 @@ static void mt7921_stop(struct ieee80211_hw *hw)
cancel_delayed_work_sync(&dev->pm.ps_work);
cancel_work_sync(&dev->pm.wake_work);
cancel_work_sync(&dev->reset_work);
mt76_connac_free_pending_tx_skbs(&dev->pm, NULL);
mt7921_mutex_acquire(dev);