1 files changed, 3 insertions, 1 deletions

diff --git a/virt/kvm/coalesced_mmio.c b/virt/kvm/coalesced_mmio.c
index d68e6c68e0f..a736a93ca7b 100644
--- a/virt/kvm/coalesced_mmio.c
+++ b/virt/kvm/coalesced_mmio.c
@@ -110,7 +110,9 @@ int kvm_coalesced_mmio_init(struct kvm *kvm)
         dev->kvm = kvm;
         kvm->coalesced_mmio_dev = dev;
 
-        ret = kvm_io_bus_register_dev(kvm, &kvm->mmio_bus, &dev->dev);
+        down_write(&kvm->slots_lock);
+        ret = kvm_io_bus_register_dev(kvm, KVM_MMIO_BUS, &dev->dev);
+        up_write(&kvm->slots_lock);
         if (ret < 0)
                 goto out_free_dev;