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wifi: mt76: mt7925e: fix use-after-free in free_irq()

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From commit a304e1b828 ("[PATCH] Debug shared irqs"), there is a test
to make sure the shared irq handler should be able to handle the unexpected
event after deregistration. For this case, let's apply MT76_REMOVED flag to
indicate the device was removed and do not run into the resource access
anymore.

Fixes: c948b5da6b ("wifi: mt76: mt7925: add Mediatek Wi-Fi7 driver for mt7925 chips")
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Deren Wu
2024-01-13 17:00:23 +08:00
committed by Felix Fietkau
parent c957280ef6
commit a5a5f4413d
1 changed files with 1 additions and 0 deletions
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1
drivers/net/wireless/mediatek/mt76/mt7925/pci.c
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@@ -427,6 +427,7 @@ static void mt7925_pci_remove(struct pci_dev *pdev)
struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
mt7925e_unregister_device(dev);
set_bit(MT76_REMOVED, &mdev->phy.state);
devm_free_irq(&pdev->dev, pdev->irq, dev);
mt76_free_device(&dev->mt76);
pci_free_irq_vectors(pdev);