Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[firefly-linux-kernel-4.4.55.git] / virt / kvm / coalesced_mmio.c

diff --git a/virt/kvm/coalesced_mmio.c b/virt/kvm/coalesced_mmio.c
index 36e258029649c719fec91a1feb7306604ae90ab9..fc8487564d1f2ac3d88ccd801451248b07e623f8 100644 (file)
--- a/virt/kvm/coalesced_mmio.c
+++ b/virt/kvm/coalesced_mmio.c
@@ -2,6 +2,7 @@
  * KVM coalesced MMIO
  *
  * Copyright (c) 2008 Bull S.A.S.
+ * Copyright 2009 Red Hat, Inc. and/or its affiliates.
  *
  *  Author: Laurent Vivier <Laurent.Vivier@bull.net>
  *
@@ -120,8 +121,10 @@ int kvm_coalesced_mmio_init(struct kvm *kvm)
        return ret;
 
 out_free_dev:
+       kvm->coalesced_mmio_dev = NULL;
        kfree(dev);
 out_free_page:
+       kvm->coalesced_mmio_ring = NULL;
        __free_page(page);
 out_err:
        return ret;
@@ -139,7 +142,7 @@ int kvm_vm_ioctl_register_coalesced_mmio(struct kvm *kvm,
        struct kvm_coalesced_mmio_dev *dev = kvm->coalesced_mmio_dev;
 
        if (dev == NULL)
-               return -EINVAL;
+               return -ENXIO;
 
        mutex_lock(&kvm->slots_lock);
        if (dev->nb_zones >= KVM_COALESCED_MMIO_ZONE_MAX) {
@@ -162,7 +165,7 @@ int kvm_vm_ioctl_unregister_coalesced_mmio(struct kvm *kvm,
        struct kvm_coalesced_mmio_zone *z;
 
        if (dev == NULL)
-               return -EINVAL;
+               return -ENXIO;
 
        mutex_lock(&kvm->slots_lock);