KVM: Use kmemdup() instead of kmalloc/memcpy

[cascardo/linux.git] / virt / kvm / kvm_main.c

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index e289486..a6e612f 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2591,13 +2591,12 @@ int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
        int i, r;
        struct kvm_io_bus *new_bus, *bus;
 
-       new_bus = kzalloc(sizeof(struct kvm_io_bus), GFP_KERNEL);
+       bus = kvm->buses[bus_idx];
+
+       new_bus = kmemdup(bus, sizeof(*bus), GFP_KERNEL);
        if (!new_bus)
                return -ENOMEM;
 
-       bus = kvm->buses[bus_idx];
-       memcpy(new_bus, bus, sizeof(struct kvm_io_bus));
-
        r = -ENOENT;
        for (i = 0; i < new_bus->dev_count; i++)
                if (new_bus->range[i].dev == dev) {