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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/ssd0323.c
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@ -322,7 +322,7 @@ static int ssd0323_load(QEMUFile *f, void *opaque, int version_id)
return 0;
}
static void ssd0323_init(SSISlave *dev)
static int ssd0323_init(SSISlave *dev)
{
ssd0323_state *s = FROM_SSI_SLAVE(ssd0323_state, dev);
@ -336,6 +336,7 @@ static void ssd0323_init(SSISlave *dev)
qdev_init_gpio_in(&dev->qdev, ssd0323_cd, 1);
register_savevm("ssd0323_oled", -1, 1, ssd0323_save, ssd0323_load, s);
return 0;
}
static SSISlaveInfo ssd0323_info = {