This is a note to let you know that I've just added the patch titled s390/pci: cleanup resources only if necessary to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: s390-pci-cleanup-resources-only-if-necessary.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 02368b7cf6c7badefa13741aed7a8b91d9a11b19 Mon Sep 17 00:00:00 2001 From: Niklas Schnelle <schnelle@xxxxxxxxxxxxx> Date: Fri, 6 Aug 2021 10:28:40 +0200 Subject: s390/pci: cleanup resources only if necessary From: Niklas Schnelle <schnelle@xxxxxxxxxxxxx> commit 02368b7cf6c7badefa13741aed7a8b91d9a11b19 upstream. 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@xxxxxxxxxxxxx> Acked-by: Pierre Morel <pmorel@xxxxxxxxxxxxx> Signed-off-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx> Signed-off-by: Heiko Carstens <hca@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/s390/pci/pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -802,7 +802,8 @@ void zpci_release_device(struct kref *kr 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; Patches currently in stable-queue which might be from schnelle@xxxxxxxxxxxxx are queue-5.10/s390-pci-cleanup-resources-only-if-necessary.patch