If an attempt to create a qdev device on the default sysbus (by passing
NULL as the bus to qdev_create) fails, print a useful error message
rather than crashing trying to dereference a NULL pointer.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
dev = qdev_try_create(bus, name);
if (!dev) {
- hw_error("Unknown device '%s' for bus '%s'\n", name, bus->info->name);
+ if (bus) {
+ hw_error("Unknown device '%s' for bus '%s'\n", name,
+ bus->info->name);
+ } else {
+ hw_error("Unknown device '%s' for default sysbus\n", name);
+ }
}
return dev;