xen/blkback: add accessor for xenbus backend device

Since backend_info is hidden away now.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/xen/blkback/xenbus.c b/drivers/xen/blkback/xenbus.c
index 34f8e4046578..c31e5c40b45c 100644
--- a/drivers/xen/blkback/xenbus.c
+++ b/drivers/xen/blkback/xenbus.c
@@ -42,6 +42,11 @@ static int connect_ring(struct backend_info *);
 static void backend_changed(struct xenbus_watch *, const char **,
                             unsigned int);
 
+struct xenbus_device *blkback_xenbus(struct backend_info *be)
+{
+        return be->dev;
+}
+
 static int blkback_name(blkif_t *blkif, char *buf)
 {
         char *devpath, *devname;