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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/xilinx_intc.c
View file

@ -145,7 +145,7 @@ static void irq_handler(void *opaque, int irq, int level)
update_irq(p);
}
static void xilinx_intc_init(SysBusDevice *dev)
static int xilinx_intc_init(SysBusDevice *dev)
{
struct xlx_pic *p = FROM_SYSBUS(typeof (*p), dev);
int pic_regs;
@ -155,6 +155,7 @@ static void xilinx_intc_init(SysBusDevice *dev)
pic_regs = cpu_register_io_memory(pic_read, pic_write, p);
sysbus_init_mmio(dev, R_MAX * 4, pic_regs);
return 0;
}
static SysBusDeviceInfo xilinx_intc_info = {