wifi: mt76: mt7921: fix deadlock in mt7921_abort_roc

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When mt7921_abort_roc is called with dev->mutex held, it can deadlock while
calling cancel_work_sync(&phy->roc_work), because the work function could
be waiting to acquire the mutex.

Fix this by flushing the work before taking the mutex

Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Fixes: 034ae28b56 ("wifi: mt76: mt7921: introduce remain_on_channel support")
Fixes: 41ac53c899 ("wifi: mt76: mt7921: introduce chanctx support")
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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This commit is contained in:

Felix Fietkau 2022-12-21 11:47:47 +01:00

parent 8065c0e13f

commit de19b9c836

1 changed files with 7 additions and 15 deletions

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drivers/net/wireless/mediatek/mt76/mt7921/main.c

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