KVM: return an error code in kvm_vm_ioctl_register_coalesced_mmio()
commitaac5c4226e
upstream. If kvm_io_bus_register_dev() fails then it returns success but it should return an error code. I also did a little cleanup like removing an impossible NULL test. Fixes:2b3c246a68
('KVM: Make coalesced mmio use a device per zone') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -154,17 +154,13 @@ int kvm_vm_ioctl_register_coalesced_mmio(struct kvm *kvm,
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list_add_tail(&dev->list, &kvm->coalesced_zones);
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mutex_unlock(&kvm->slots_lock);
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return ret;
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return 0;
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out_free_dev:
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mutex_unlock(&kvm->slots_lock);
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kfree(dev);
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if (dev == NULL)
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return -ENXIO;
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return 0;
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return ret;
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}
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int kvm_vm_ioctl_unregister_coalesced_mmio(struct kvm *kvm,
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