diff options
| author |   Sebastian Ott <sebott@linux.vnet.ibm.com> | 2013-12-12 17:50:53 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-12-16 14:37:54 +0100 |
| commit | 704268925d32a0457202371a61580af76b94c53a (patch) | |
| tree | 0b6046705766ce3ed9da2d14a561da9f93cbfb20 /arch/s390/pci/pci_event.c | |
| parent | s390/pci: prevent inadvertently triggered bus scans (diff) | |
| download | linux-dev-704268925d32a0457202371a61580af76b94c53a.tar.xz linux-dev-704268925d32a0457202371a61580af76b94c53a.zip | |
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 <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/pci/pci_event.c')
| -rw-r--r-- | arch/s390/pci/pci_event.c | 2 |
1 files changed, 2 insertions, 0 deletions
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; |