Hi Greg, Hi Sasha,
Please take this backport of the upstream commit a46044a92add ("s390/pci: fix zpci_zdev_put() on reserve") for the v5.10 stable series. Unlike the v5.14 series we do *NOT* include commit 023cc3cb1e4b ("s390/pci: cleanup resources only if necessary") either as a separate commit subsumed. We don't yet have the zdev->has_resource attribute that was added as part of v5.13 and do not need it for this fix.
Thanks, Niklas
Niklas Schnelle (1): s390/pci: fix zpci_zdev_put() on reserve
arch/s390/include/asm/pci.h | 3 ++ arch/s390/pci/pci.c | 45 ++++++++++++++++++++++++++---- arch/s390/pci/pci_event.c | 4 +-- drivers/pci/hotplug/s390_pci_hpc.c | 9 +----- 4 files changed, 46 insertions(+), 15 deletions(-)