s390/pci: cleanup resources only if necessary
It's currently safe to call zpci_cleanup_bus_resources() even if the
resources were never created but it makes no sense so check
zdev->has_resources before we call zpci_cleanup_bus_resources() in
zpci_release_device().
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Acked-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index a678b9d..67dc5b1 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -822,7 +822,8 @@ void zpci_release_device(struct kref *kref)
case ZPCI_FN_STATE_STANDBY:
if (zdev->has_hp_slot)
zpci_exit_slot(zdev);
- zpci_cleanup_bus_resources(zdev);
+ if (zdev->has_resources)
+ zpci_cleanup_bus_resources(zdev);
zpci_bus_device_unregister(zdev);
zpci_destroy_iommu(zdev);
fallthrough;
