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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/eccmemctl.c
View file

@ -315,7 +315,7 @@ static void ecc_reset(void *opaque)
s->regs[ECC_ECR1] = 0;
}
static void ecc_init1(SysBusDevice *dev)
static int ecc_init1(SysBusDevice *dev)
{
int ecc_io_memory;
ECCState *s = FROM_SYSBUS(ECCState, dev);
@ -333,6 +333,7 @@ static void ecc_init1(SysBusDevice *dev)
register_savevm("ECC", -1, 3, ecc_save, ecc_load, s);
qemu_register_reset(ecc_reset, s);
ecc_reset(s);
return 0;
}
static SysBusDeviceInfo ecc_info = {