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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/armv7m.c
View file

@ -122,7 +122,7 @@ typedef struct {
uint32_t base;
} BitBandState;
static void bitband_init(SysBusDevice *dev)
static int bitband_init(SysBusDevice *dev)
{
BitBandState *s = FROM_SYSBUS(BitBandState, dev);
int iomemtype;
@ -130,6 +130,7 @@ static void bitband_init(SysBusDevice *dev)
iomemtype = cpu_register_io_memory(bitband_readfn, bitband_writefn,
&s->base);
sysbus_init_mmio(dev, 0x02000000, iomemtype);
return 0;
}
static void armv7m_bitband_init(void)