[libvirt] [PATCH 1/4] Make drive unit attribute optional in the XML schema

[Michael Ellerman]

The "unit" attribute of a drive address is optional in the code, so should
also be in the XML schema.

Signed-off-by: Michael Ellerman <michael at ellerman.id.au>
---
 docs/schemas/domaincommon.rng |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index e93ae77..b9da906 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -2307,9 +2307,11 @@
         <ref name="driveBus"/>
       </attribute>
     </optional>
-    <attribute name="unit">
-      <ref name="driveUnit"/>
-    </attribute>
+    <optional>
+      <attribute name="unit">
+        <ref name="driveUnit"/>
+      </attribute>
+    </optional>
   </define>
   <define name="virtioserialaddress">
     <attribute name="controller">
-- 
1.7.7.3