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KVM: Add proper lockdep assertion in I/O bus unregister

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Convert a comment above kvm_io_bus_unregister_dev() into an actual
lockdep assertion, and opportunistically add curly braces to a multi-line
for-loop.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210412222050.876100-4-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2021-04-12 15:20:50 -07:00
committed by Paolo Bonzini
parent 5d3c4c7938
commit 7c896d3755
1 changed files with 4 additions and 2 deletions
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virt/kvm/kvm_main.c
+4 -2
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@@ -4620,21 +4620,23 @@ int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
return 0;
}
/* Caller must hold slots_lock. */
int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
struct kvm_io_device *dev)
{
int i, j;
struct kvm_io_bus *new_bus, *bus;
lockdep_assert_held(&kvm->slots_lock);
bus = kvm_get_bus(kvm, bus_idx);
if (!bus)
return 0;
for (i = 0; i < bus->dev_count; i++)
for (i = 0; i < bus->dev_count; i++) {
if (bus->range[i].dev == dev) {
break;
}
}
if (i == bus->dev_count)
return 0;