Drivers: hv: vmbus: kill tasklets on module unload

Explicitly kill tasklets we create on module unload.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 2b56260..cf20400 100644 (file)
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -1108,6 +1108,7 @@ static void __exit vmbus_exit(void)
        hv_synic_clockevents_cleanup();
        vmbus_disconnect();
        hv_remove_vmbus_irq();
+       tasklet_kill(&msg_dpc);
        vmbus_free_channels();
        if (ms_hyperv.features & HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE) {
                atomic_notifier_chain_unregister(&panic_notifier_list,
@@ -1115,8 +1116,10 @@ static void __exit vmbus_exit(void)
        }
        bus_unregister(&hv_bus);
        hv_cleanup();
-       for_each_online_cpu(cpu)
+       for_each_online_cpu(cpu) {
+               tasklet_kill(hv_context.event_dpc[cpu]);
                smp_call_function_single(cpu, hv_synic_cleanup, NULL, 1);
+       }
        acpi_bus_unregister_driver(&vmbus_acpi_driver);
        hv_cpu_hotplug_quirk(false);
 }