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qdev: add return value to init() callbacks.

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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>
This commit is contained in:
Gerd Hoffmann 2009-08-14 10:36:05 +02:00 • committed by Anthony Liguori
parent 24e6f3551f
commit 81a322d4a1
102 changed files with 334 additions and 193 deletions
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3
hw/pl031.c
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@ -183,7 +183,7 @@ static CPUReadMemoryFunc * const pl031_readfn[] = {
pl031_read
};
static void pl031_init(SysBusDevice *dev)
static int pl031_init(SysBusDevice *dev)
{
int iomemtype;
pl031_state *s = FROM_SYSBUS(pl031_state, dev);
@ -202,6 +202,7 @@ static void pl031_init(SysBusDevice *dev)
s->tick_offset = mktimegm(&tm);
s->timer = qemu_new_timer(vm_clock, pl031_interrupt, s);
return 0;
}
static void pl031_register_devices(void)