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.mayd...@linaro.org>
---
hw/qdev.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/hw/qdev.c b/hw/qdev.c
index b4ea8e1..3fec62a 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -110,7 +110,12 @@ DeviceState *qdev_create(BusState *bus, const char *name)
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;
--
1.7.4.1
