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From d2b004602412ce65613b30f28d07ef8607e0d505 Mon Sep 17 00:00:00 2001
From: Markus Armbruster <armbru@redhat.com>
Date: Fri, 17 Jan 2014 17:07:58 +0100
Subject: [PATCH 08/11] qdev-monitor: Avoid device_add crashing on non-device driver name
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RH-Author: Markus Armbruster <armbru@redhat.com>
Message-id: <1389978479-30595-9-git-send-email-armbru@redhat.com>
Patchwork-id: 56795
O-Subject: [PATCH 7.0 qemu-kvm 8/9] qdev-monitor: Avoid device_add crashing on non-device driver name
Bugzilla: 669524
RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
RH-Acked-by: Marcel Apfelbaum <marcel.a@redhat.com>

Watch this:

    $ upstream-qemu -nodefaults -S -display none -monitor stdio
    QEMU 1.7.50 monitor - type 'help' for more information
    (qemu) device_add rng-egd
    /work/armbru/qemu/qdev-monitor.c:491:qdev_device_add: Object 0x2089b00 is not an instance of type device
    Aborted (core dumped)

Crashes because "rng-egd" exists, but isn't a subtype of TYPE_DEVICE.
Broken in commit 18b6dad.

Cc: qemu-stable@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
(cherry picked from commit 061e84f7a469ad1f94f3b5f6a5361b346ab990e8)
---
 qdev-monitor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 qdev-monitor.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/qdev-monitor.c b/qdev-monitor.c
index da7fe0d..55a476b 100644
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -478,7 +478,7 @@ DeviceState *qdev_device_add(QemuOpts *opts)
         }
     }
 
-    if (!oc) {
+    if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
         qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "device type");
         return NULL;
     }
-- 
1.7.1