Re: [Qemu-devel] [PATCH v2 1/6] hw/char: QOM'ify escc.c

[Paolo Bonzini <pbonzini@redhat.com>]

On 29/03/2016 09:47, xiaoqiang zhao wrote:
> Drop the old SysBus init function and use instance_init
> 
> Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
> ---
>  hw/char/escc.c | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/hw/char/escc.c b/hw/char/escc.c
> index 7bf09a0..b802c3e 100644
> --- a/hw/char/escc.c
> +++ b/hw/char/escc.c
> @@ -983,9 +983,10 @@ void slavio_serial_ms_kbd_init(hwaddr base, qemu_irq irq,
>      sysbus_mmio_map(s, 0, base);
>  }
>  
> -static int escc_init1(SysBusDevice *dev)
> +static void escc_init1(Object *obj)
>  {
> -    ESCCState *s = ESCC(dev);
> +    ESCCState *s = ESCC(obj);
> +    SysBusDevice *dev = SYS_BUS_DEVICE(obj);
>      unsigned int i;
>  
>      s->chn[0].disabled = s->disabled;
> @@ -1002,7 +1003,7 @@ static int escc_init1(SysBusDevice *dev)
>      s->chn[0].otherchn = &s->chn[1];
>      s->chn[1].otherchn = &s->chn[0];
>  
> -    memory_region_init_io(&s->mmio, OBJECT(s), &escc_mem_ops, s, "escc",
> +    memory_region_init_io(&s->mmio, obj, &escc_mem_ops, s, "escc",
>                            ESCC_SIZE << s->it_shift);
>      sysbus_init_mmio(dev, &s->mmio);
>  
> @@ -1014,8 +1015,6 @@ static int escc_init1(SysBusDevice *dev)
>          s->chn[1].hs = qemu_input_handler_register((DeviceState *)(&s->chn[1]),
>                                                     &sunkbd_handler);
>      }

No, instance_init cannot touch globals (qemu_add_mouse_event_handler,
qemu_input_handler_register).

Paolo

> -
> -    return 0;
>  }
>  
>  static Property escc_properties[] = {
> @@ -1032,9 +1031,7 @@ static Property escc_properties[] = {
>  static void escc_class_init(ObjectClass *klass, void *data)
>  {
>      DeviceClass *dc = DEVICE_CLASS(klass);
> -    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
>  
> -    k->init = escc_init1;
>      dc->reset = escc_reset;
>      dc->vmsd = &vmstate_escc;
>      dc->props = escc_properties;
> @@ -1045,6 +1042,7 @@ static const TypeInfo escc_info = {
>      .name          = TYPE_ESCC,
>      .parent        = TYPE_SYS_BUS_DEVICE,
>      .instance_size = sizeof(ESCCState),
> +    .instance_init = escc_init1,
>      .class_init    = escc_class_init,
>  };
>  
>