[Qemu-devel] [PATCH v6 1/3] Check if GlobalProperty exists before registering

["Crístian Viana" <vianac@linux.vnet.ibm.com>]

If a GlobalProperty has already been registered, it won't have its value
overwritten. This is done to enforce that the properties specified in the command
line will "win" over the ones specified by the machine properties, if set with
the parameter "-M".

Signed-off-by: Crístian Viana <vianac@linux.vnet.ibm.com>
---
Changes since v5:
- Updated commit message of PATCH 1/3
- Rebased on master

 hw/qdev-properties.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c
index 3571cf3..8356879 100644
--- a/hw/qdev-properties.c
+++ b/hw/qdev-properties.c
@@ -1212,6 +1212,14 @@ static QTAILQ_HEAD(, GlobalProperty) global_props = QTAILQ_HEAD_INITIALIZER(glob
 
 static void qdev_prop_register_global(GlobalProperty *prop)
 {
+    GlobalProperty *p;
+
+    QTAILQ_FOREACH(p, &global_props, next) {
+        if (strcmp(prop->driver, p->driver) == 0) {
+            return;
+        }
+    }
+
     QTAILQ_INSERT_TAIL(&global_props, prop, next);
 }
 
-- 
1.7.9.5