static void __exit vmbus_exit()

in vmbus_drv.c [2749:2792]

• 37 lines of code
• 3 McCabe index (conditional complexity)

static void __exit vmbus_exit(void)
{
	int cpu;

	unregister_syscore_ops(&hv_synic_syscore_ops);

	hv_remove_kexec_handler();
	hv_remove_crash_handler();
	vmbus_connection.conn_state = DISCONNECTED;
	hv_stimer_global_cleanup();
	vmbus_disconnect();
	if (vmbus_irq == -1) {
		hv_remove_vmbus_handler();
	} else {
		free_percpu_irq(vmbus_irq, vmbus_evt);
		free_percpu(vmbus_evt);
	}
	for_each_online_cpu(cpu) {
		struct hv_per_cpu_context *hv_cpu
			= per_cpu_ptr(hv_context.cpu_context, cpu);

		tasklet_kill(&hv_cpu->msg_dpc);
	}
	hv_debug_rm_all_dir();

	vmbus_free_channels();
	kfree(vmbus_connection.channels);

	if (ms_hyperv.misc_features & HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE) {
		kmsg_dump_unregister(&hv_kmsg_dumper);
		unregister_die_notifier(&hyperv_die_block);
		atomic_notifier_chain_unregister(&panic_notifier_list,
						 &hyperv_panic_block);
	}

	free_page((unsigned long)hv_panic_page);
	unregister_sysctl_table(hv_ctl_table_hdr);
	hv_ctl_table_hdr = NULL;
	bus_unregister(&hv_bus);

	cpuhp_remove_state(hyperv_cpuhp_online);
	hv_synic_free();
	acpi_bus_unregister_driver(&vmbus_acpi_driver);
}