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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/syborg_timer.c
View file

@ -203,7 +203,7 @@ static int syborg_timer_load(QEMUFile *f, void *opaque, int version_id)
return 0;
}
static void syborg_timer_init(SysBusDevice *dev)
static int syborg_timer_init(SysBusDevice *dev)
{
SyborgTimerState *s = FROM_SYSBUS(SyborgTimerState, dev);
QEMUBH *bh;
@ -223,6 +223,7 @@ static void syborg_timer_init(SysBusDevice *dev)
ptimer_set_freq(s->timer, s->freq);
register_savevm("syborg_timer", -1, 1,
syborg_timer_save, syborg_timer_load, s);
return 0;
}
static SysBusDeviceInfo syborg_timer_info = {