diff options
| -rw-r--r-- | arch/s390/kvm/pci.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/s390/kvm/pci.c b/arch/s390/kvm/pci.c index 36eb30953bb5..1eb127fc9f89 100644 --- a/arch/s390/kvm/pci.c +++ b/arch/s390/kvm/pci.c @@ -317,6 +317,11 @@ static int kvm_s390_pci_aif_enable(struct zpci_dev *zdev, struct zpci_fib *fib, AIRQ_IV_GUESTVEC, phys_to_virt(fib->fmt0.aibv)); + if (!zdev->aibv) { + rc = -ENOMEM; + goto free_aisb; + } + spin_lock_irq(&aift->gait_lock); gaite = aift->gait + zdev->aisb; @@ -353,6 +358,9 @@ static int kvm_s390_pci_aif_enable(struct zpci_dev *zdev, struct zpci_fib *fib, rc = kvm_zpci_set_airq(zdev); return rc; +free_aisb: + airq_iv_free_bit(aift->sbv, zdev->aisb); + zdev->aisb = 0; unlock: if (pcount > 0) unaccount_mem(zdev->kzdev, pcount); |