tree cdca9840d0620d9e0b46d7b81c58abe04a372b78
parent 24e6f3551f3c8ea7cc7524a3e64e84beca59618f
author Gerd Hoffmann <kraxel@redhat.com> 1250238965 +0200
committer Anthony Liguori <aliguori@us.ibm.com> 1251423808 -0500

qdev: add return value to init() callbacks.

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>