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authorLaszlo Ersek <lersek@redhat.com>2017-03-20 18:05:57 +0100
committerMichael S. Tsirkin <mst@redhat.com>2017-03-22 18:29:27 +0200
commitf92063028a0ea9e15d8f962644bce76c0e8aa7d1 (patch)
treeaa6351da0d31306379373403493ee34065c05391 /include
parentf2a1ae45d8ec5ad494e66a9234499a2e0fbf4b40 (diff)
downloadqemu-f92063028a0ea9e15d8f962644bce76c0e8aa7d1.tar.gz
hw/acpi/vmgenid: prevent more than one vmgenid device
A system with multiple VMGENID devices is undefined in the VMGENID spec by omission. Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Ben Warren <ben@skyportsystems.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/hw/acpi/vmgenid.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/acpi/vmgenid.h b/include/hw/acpi/vmgenid.h
index 8578476bae..7beb9592fb 100644
--- a/include/hw/acpi/vmgenid.h
+++ b/include/hw/acpi/vmgenid.h
@@ -24,6 +24,7 @@ typedef struct VmGenIdState {
bool write_pointer_available;
} VmGenIdState;
+/* returns NULL unless there is exactly one device */
static inline Object *find_vmgenid_dev(void)
{
return object_resolve_path_type("", VMGENID_DEVICE, NULL);