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s390/pci: cleanup resources only if necessary

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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>
This commit is contained in:
Niklas Schnelle
2021-08-06 10:28:40 +02:00
committed by Heiko Carstens
parent 7c0eaa78b9
commit 02368b7cf6
1 changed files with 2 additions and 1 deletions
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3
arch/s390/pci/pci.c
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@@ -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;