qdev: add return value to init() callbacks.
Sorry folks, but it has to be. One more of these invasive qdev patches.
We have a serious design bug in the qdev interface: device init
callbacks can't signal failure because the init() callback has no
return value. This patch fixes it.
We have already one case in-tree where this is needed:
Try -device virtio-blk-pci (without drive= specified) and watch qemu
segfault. This patch fixes it.
With usb+scsi being converted to qdev we'll get more devices where the
init callback can fail for various reasons.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/hw/m48t59.c b/hw/m48t59.c
index 3f2e3e5..0fcf4f8 100644
--- a/hw/m48t59.c
+++ b/hw/m48t59.c
@@ -642,7 +642,7 @@
return d;
}
-static void m48t59_init1(SysBusDevice *dev)
+static int m48t59_init1(SysBusDevice *dev)
{
m48t59_t *s = FROM_SYSBUS(m48t59_t, dev);
int mem_index;
@@ -661,6 +661,7 @@
qemu_register_reset(m48t59_reset, s);
register_savevm("m48t59", -1, 1, m48t59_save, m48t59_load, s);
+ return 0;
}
static SysBusDeviceInfo m48t59_info = {
