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[Qemu-devel] [PATCH v3 10/10] qdev: Do not let the user try to device_ad
From: |
armbru |
Subject: |
[Qemu-devel] [PATCH v3 10/10] qdev: Do not let the user try to device_add when it cannot work |
Date: |
Wed, 30 Oct 2013 17:28:44 +0100 |
From: Markus Armbruster <address@hidden>
Such devices have always been unavailable and omitted from the list of
available devices shown by device_add help. Until commit 18b6dad
silently broke the former, setting up nasty traps for unwary users,
like this one:
$ qemu-system-x86_64 -nodefaults -monitor stdio -display none
QEMU 1.6.50 monitor - type 'help' for more information
(qemu) device_add apic
Segmentation fault (core dumped)
I call that a regression. Fix it.
Signed-off-by: Markus Armbruster <address@hidden>
---
qdev-monitor.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/qdev-monitor.c b/qdev-monitor.c
index 36f6f09..d3d87a3 100644
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -477,13 +477,13 @@ DeviceState *qdev_device_add(QemuOpts *opts)
}
}
- if (!obj) {
+ k = DEVICE_CLASS(obj);
+
+ if (!k || k->cannot_instantiate_with_device_add_yet) {
qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "device type");
return NULL;
}
- k = DEVICE_CLASS(obj);
-
/* find bus */
path = qemu_opt_get(opts, "bus");
if (path != NULL) {
--
1.8.1.4
- [Qemu-devel] [PATCH v3 06/10] ich9: Document why cannot_instantiate_with_device_add_yet, (continued)
- [Qemu-devel] [PATCH v3 06/10] ich9: Document why cannot_instantiate_with_device_add_yet, armbru, 2013/10/30
- [Qemu-devel] [PATCH v3 08/10] vt82c686: Clean up use of cannot_instantiate_with_device_add_yet, armbru, 2013/10/30
- [Qemu-devel] [PATCH v3 01/10] qdev: Replace no_user by cannot_instantiate_with_device_add_yet, armbru, 2013/10/30
- [Qemu-devel] [PATCH v3 09/10] isa: Clean up use of cannot_instantiate_with_device_add_yet, armbru, 2013/10/30
- [Qemu-devel] [PATCH v3 05/10] pci-host: Consistently set cannot_instantiate_with_device_add_yet, armbru, 2013/10/30
- [Qemu-devel] [PATCH v3 07/10] piix3 piix4: Clean up use of cannot_instantiate_with_device_add_yet, armbru, 2013/10/30
- [Qemu-devel] [PATCH v3 10/10] qdev: Do not let the user try to device_add when it cannot work,
armbru <=