[PATCH wireless] wifi: mt76: mt7615: cancel coredump delayed work on device unregister

[Tristan Madani]

mt7615_unregister_device() calls mt76_free_device() which destroys the
workqueue without first cancelling the coredump.work delayed work. If a
firmware coredump is in progress when the driver is unloaded, the pending
timer can fire after the workqueue has been freed.

Add cancel_delayed_work_sync() for coredump.work in
mt7615_unregister_device() before the mt76_free_device() call.

Fixes: d2bf7959d9c0 ("mt76: mt7663: introduce coredump support")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Tristan Madani <tristan@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
index a9178e077fd6d..c06b0301a4e4a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
@@ -124,5 +124,6 @@ void mt7615_unregister_device(struct mt7615_dev *dev)
 	mt7615_dma_cleanup(dev);
 	tasklet_disable(&dev->mt76.irq_tasklet);
 
+	cancel_delayed_work_sync(&dev->coredump.work);
 	mt76_free_device(&dev->mt76);
 }
-- 
2.47.3