Hi, There is a potential double-lock sequence starting from hfc_remove_pci().
Forward trace: 1. hfc_remove_pci() LOCKS spin_lock_irqsave(&HFClock, flags) at 5284 2. hfc_remove_pci() calls release_card(card) at 5285 3. release_card() calls release_port(hc, hc->chan[ch].dch) at 4674 4. release_port() calls plxsd_checksync(hc, 1) at 4595 5. plxsd_checksync() calls hfcmulti_resync(hc, ..., rm) at 1036 or 1044 6. hfcmulti_resync() LOCKS spin_lock_irqsave(&HFClock, flags) at 933 NB: Bug found by static analysis thanks to EBA (https://github.com/IagoAbal/eba). Hope it helps, -- iago
