KVM: PIT: Unregister ack notifier callback when freeing

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 137e548..472653c 100644 (file)
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -672,6 +672,8 @@ void kvm_free_pit(struct kvm *kvm)
        if (kvm->arch.vpit) {
                kvm_unregister_irq_mask_notifier(kvm, 0,
                                               &kvm->arch.vpit->mask_notifier);
+               kvm_unregister_irq_ack_notifier(kvm,
+                               &kvm->arch.vpit->pit_state.irq_ack_notifier);
                mutex_lock(&kvm->arch.vpit->pit_state.lock);
                timer = &kvm->arch.vpit->pit_state.pit_timer.timer;
                hrtimer_cancel(timer);