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| author | Xie Yongji <xieyongji@baidu.com> | 2019-03-20 19:26:44 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-05-20 18:40:02 -0400 |
| commit | a57f009108076d3c30f87be5d580c6344ad44971 (patch) | |
| tree | 3e6973f32e9c9da60656b9ab51455bd596533cf0 /hw | |
| parent | f3facbe67110089f075aba1091dbc8280304fbaf (diff) | |
| download | qemu-a57f009108076d3c30f87be5d580c6344ad44971.zip qemu-a57f009108076d3c30f87be5d580c6344ad44971.tar.gz qemu-a57f009108076d3c30f87be5d580c6344ad44971.tar.bz2 | |
vhost-user-blk: Add return value for vhost_user_blk_start()
Add a return value for vhost_user_blk_start() to check whether
we start vhost-user backend successfully or not.
Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190320112646.3712-6-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/block/vhost-user-blk.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index 39e1adc..6802c19 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -103,7 +103,7 @@ const VhostDevConfigOps blk_ops = { .vhost_dev_config_notifier = vhost_user_blk_handle_config_change, }; -static void vhost_user_blk_start(VirtIODevice *vdev) +static int vhost_user_blk_start(VirtIODevice *vdev) { VHostUserBlk *s = VHOST_USER_BLK(vdev); BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev))); @@ -112,13 +112,13 @@ static void vhost_user_blk_start(VirtIODevice *vdev) if (!k->set_guest_notifiers) { error_report("binding does not support guest notifiers"); - return; + return -ENOSYS; } ret = vhost_dev_enable_notifiers(&s->dev, vdev); if (ret < 0) { error_report("Error enabling host notifiers: %d", -ret); - return; + return ret; } ret = k->set_guest_notifiers(qbus->parent, s->dev.nvqs, true); @@ -157,12 +157,13 @@ static void vhost_user_blk_start(VirtIODevice *vdev) vhost_virtqueue_mask(&s->dev, vdev, i, false); } - return; + return ret; err_guest_notifiers: k->set_guest_notifiers(qbus->parent, s->dev.nvqs, false); err_host_notifiers: vhost_dev_disable_notifiers(&s->dev, vdev); + return ret; } static void vhost_user_blk_stop(VirtIODevice *vdev) |