From 704268925d32a0457202371a61580af76b94c53a Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Thu, 12 Dec 2013 17:50:53 +0100 Subject: s390/pci: fix removal of nonexistent pci bus If we remove a pci bus after receiving a hotplug notification we need to check if the bus is actually present (creation of the pci bus during an earlier notification may have been failed). Reviewed-by: Gerald Schaefer Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- arch/s390/pci/pci_event.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c index 228787a3630a..65ea105f68a1 100644 --- a/arch/s390/pci/pci_event.c +++ b/arch/s390/pci/pci_event.c @@ -112,6 +112,8 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) clp_rescan_pci_devices(); break; case 0x0308: /* Standby -> Reserved */ + if (!zdev) + break; pci_stop_root_bus(zdev->bus); pci_remove_root_bus(zdev->bus); break; -- cgit v1.2.3