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Diffstat (limited to 'drivers/xen/blkback/xenbus.c')
| -rw-r--r-- | drivers/xen/blkback/xenbus.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/xen/blkback/xenbus.c b/drivers/xen/blkback/xenbus.c index a0534fc..031bc3d 100644 --- a/drivers/xen/blkback/xenbus.c +++ b/drivers/xen/blkback/xenbus.c @@ -382,6 +382,11 @@ static void frontend_changed(struct xenbus_device *dev, if (dev->state == XenbusStateConnected) break; + /* Enforce precondition before potential leak point. + * blkif_disconnect() is idempotent. + */ + blkif_disconnect(be->blkif); + err = connect_ring(be); if (err) break; @@ -399,6 +404,7 @@ static void frontend_changed(struct xenbus_device *dev, break; /* fall through if not online */ case XenbusStateUnknown: + /* implies blkif_disconnect() via blkback_remove() */ device_unregister(&dev->dev); break; |
