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[Qemu-devel] [PATCH 2/3] hw/qdev: Don't crash if qdev_create(NULL, ...)
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PATCH 2/3] hw/qdev: Don't crash if qdev_create(NULL, ...) fails |
Date: |
Fri, 12 Aug 2011 13:12:20 +0100 |
From: Peter Maydell <address@hidden>
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 <address@hidden>
Reviewed-by: Markus Armbruster <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
---
hw/qdev.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/hw/qdev.c b/hw/qdev.c
index 6819537..d8114c6 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -111,7 +111,12 @@ 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;
--
1.7.5.4