From 104a7f4e1355493175b0ad6f49c524ee449c16f7 Mon Sep 17 00:00:00 2001 From: Jason Andryuk Date: Wed, 24 Jun 2020 08:19:39 -0400 Subject: [PATCH] xen: Fix xen-legacy-backend qdev types xen-sysdev is a TYPE_SYS_BUS_DEVICE. bus_type should not be changed so that it can plug into the System bus. Otherwise this assert triggers: qemu-system-i386: hw/core/qdev.c:102: qdev_set_parent_bus: Assertion `dc->bus_type && object_dynamic_cast(OBJECT(bus), dc->bus_type)' failed. TYPE_XENBACKEND attaches to TYPE_XENSYSBUS, so its class_init needs to be set accordingly to attach the qdev. Otherwise the following assert triggers: qemu-system-i386: hw/core/qdev.c:102: qdev_set_parent_bus: Assertion `dc->bus_type && object_dynamic_cast(OBJECT(bus), dc->bus_type)' failed. TYPE_XENBACKEND is not a subclass of XEN_XENSYSDEV, so it's parent is just TYPE_DEVICE. Change that. Signed-off-by: Jason Andryuk Acked-by: Paul Durrant Fixes: 81cb05732efb ("qdev: Assert devices are plugged into a bus that can take them") Message-Id: <20200624121939.10282-1-jandryuk@gmail.com> Signed-off-by: Anthony PERARD --- hw/xen/xen-legacy-backend.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/xen/xen-legacy-backend.c b/hw/xen/xen-legacy-backend.c index 7d4b13351e..083d8dc1b2 100644 --- a/hw/xen/xen-legacy-backend.c +++ b/hw/xen/xen-legacy-backend.c @@ -789,11 +789,12 @@ static void xendev_class_init(ObjectClass *klass, void *data) set_bit(DEVICE_CATEGORY_MISC, dc->categories); /* xen-backend devices can be plugged/unplugged dynamically */ dc->user_creatable = true; + dc->bus_type = TYPE_XENSYSBUS; } static const TypeInfo xendev_type_info = { .name = TYPE_XENBACKEND, - .parent = TYPE_XENSYSDEV, + .parent = TYPE_DEVICE, .class_init = xendev_class_init, .instance_size = sizeof(struct XenLegacyDevice), }; @@ -824,7 +825,6 @@ static void xen_sysdev_class_init(ObjectClass *klass, void *data) DeviceClass *dc = DEVICE_CLASS(klass); device_class_set_props(dc, xen_sysdev_properties); - dc->bus_type = TYPE_XENSYSBUS; } static const TypeInfo xensysdev_info = { -- 2.11.0