[Qemu-devel] [PATCH] hw/s390x: Mark the "sclpquiesce" device with user_creatable = false

[Thomas Huth <thuth@redhat.com>]

The "sclpquiesce" device is just an internal device that should not be
created by the user directly. Though it currently does not seem to cause
any obvious trouble when the user instantiates an additional device, let's
better mark it with user_creatable = false to avoid unexpected behavior,
e.g. because the quiesce notifier gets registered multiple times.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 hw/s390x/sclpquiesce.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/hw/s390x/sclpquiesce.c b/hw/s390x/sclpquiesce.c
index 762cb18..0241643 100644
--- a/hw/s390x/sclpquiesce.c
+++ b/hw/s390x/sclpquiesce.c
@@ -118,8 +118,13 @@ static void quiesce_class_init(ObjectClass *klass, void *data)
     dc->reset = quiesce_reset;
     dc->vmsd = &vmstate_sclpquiesce;
     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
-    k->init = quiesce_init;
+    /*
+     * Reason: This is just an internal device - the notifier should
+     * not be registered multiple times in quiesce_init()
+     */
+    dc->user_creatable = false;
 
+    k->init = quiesce_init;
     k->get_send_mask = send_mask;
     k->get_receive_mask = receive_mask;
     k->can_handle_event = can_handle_event;
-- 
1.8.3.1