[PATCH 2/2] tcm_vhost: Wait for pending requests in vhost_scsi_clear_endpoint()

[Asias He <asias@redhat.com>]

Wait for termination of all pending requests in clear endpoint
operation, otherwise you cannot reset virtio devices safely.

Signed-off-by: Asias He <asias@redhat.com>
---
 drivers/vhost/tcm_vhost.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index 5f8342c..4b0cb12 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -1152,9 +1152,13 @@ static int vhost_scsi_clear_endpoint(
 		tv_tpg->tv_tpg_vhost_count--;
 		tv_tpg->vhost_scsi = NULL;
 		vs->vs_tpg[target] = NULL;
+		/* After this, no further requests can be queued */
 		vs->vs_endpoint = false;
 		mutex_unlock(&tv_tpg->tv_tpg_mutex);
 	}
+	/* Flush the pending requests and wait for them to finish */
+	vhost_scsi_flush(vs);
+
 	mutex_unlock(&vs->dev.mutex);
 	return 0;
 
-- 
1.8.1.4