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Chad MonroeandFelix Fietkau
50480826f5
mt7996_remove_interface() destroys the remaining vif links, clearing omac_mask, vif_mask and mld_idx_mask, with only the wiphy mutex held. Those masks are modified under dev->mutex everywhere else, so the unlocked clears can race the scan-link teardown and the reset work and lose updates. Take dev->mutex around the link destroy loop, matching mt7996_add_interface() and mt7915_remove_interface(). The mutex is released before mt76_vif_cleanup(), which aborts a pending scan and takes the mutex itself. Signed-off-by: Chad Monroe <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>