Locking is required when tweaking bits located in a shared page, use the
sync_ version of bitops. Without this change vmbus_on_event() will miss
events and as a result, vmbus_isr() will not schedule the receive tasklet.
Signed-off-by: NOlaf Hering <olaf@aepfle.de>
Cc: stable <stable@kernel.org>
Acked-by: NHaiyang Zhang <haiyangz@microsoft.com>
Acked-by: NHank Janssen <hjanssen@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>