Drivers: hv: vmbus: Teardown clockevent devices on module unload
authorVitaly Kuznetsov <vkuznets@redhat.com>
Fri, 27 Feb 2015 19:25:57 +0000 (11:25 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 2 Mar 2015 03:30:07 +0000 (19:30 -0800)
commite086748c655ab99bac91b87d1bb59d9cc45867b9
tree004fda805ee1c6124bcd275357ccafed6c786ad5
parent32a158325acf12842764b1681f53903673f2f22e
Drivers: hv: vmbus: Teardown clockevent devices on module unload

Newly introduced clockevent devices made it impossible to unload hv_vmbus
module as clockevents_config_and_register() takes additional reverence to
the module. To make it possible again we do the following:
- avoid setting dev->owner for clockevent devices;
- implement hv_synic_clockevents_cleanup() doing clockevents_unbind_device();
- call it from vmbus_exit().

In theory hv_synic_clockevents_cleanup() can be merged with hv_synic_cleanup(),
however, we call hv_synic_cleanup() from smp_call_function_single() and this
doesn't work for clockevents_unbind_device() as it does such call on its own. I
opted for a separate function.

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>
drivers/hv/hv.c
drivers/hv/hyperv_vmbus.h
drivers/hv/vmbus_drv.c