tree bae0f0a576a8b0a0f7389f79a0aaf38d5593f8b8
parent e3816255bf4b6377bb405331e2ee0dc14d841b80
author Jason Wang <jasowang@redhat.com> 1432879994 +0800
committer Michael S. Tsirkin <mst@redhat.com> 1435072101 +0200

vhost: correctly pass error to caller in vhost_dev_enable_notifiers()

We override the error value r in fail_vq, this will cause the caller
can't detect the failure which may cause the caller may disable the
notifiers twice if vhost is failed to start. Fix this by using another
variable to keep track the return value of set_host_notifier().

Fixes b0b3db79559e57db340b292621c397e7a6cdbdc5 ("vhost-net: cleanup
host notifiers at last step")

Cc: qemu-stable@nongnu.org
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>