Re: [Qemu-devel] [PATCH v6 2/3] qdev: using NULL instead of local_err for qbus_child unrealize

["Andreas Färber" <afaerber@suse.de>]

Am 04.09.2014 04:18, schrieb arei.gonglei@huawei.com:
> From: Gonglei <arei.gonglei@huawei.com>
> 
> Forcefully unrealize all children regardless of early-iteration
> errors(if happened). We should keep going with cleanup operation
> rather than report a error immediately, meanwhile store the first
> child unrealize failure and propagate it at the end. We also
> forcefully un-vmsding and unrealizing actual object too.
> 
> Signed-off-by: Gonglei <arei.gonglei@huawei.com>
> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
> ---
>  hw/core/qdev.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/hw/core/qdev.c b/hw/core/qdev.c
> index 4a1ac5b..6f37cd3 100644
> --- a/hw/core/qdev.c
> +++ b/hw/core/qdev.c
> @@ -871,18 +871,18 @@ static void device_set_realized(Object *obj, bool value, Error **errp)
>          }
>          dev->pending_deleted_event = false;
>      } else if (!value && dev->realized) {
> +        Error **local_errp = NULL;
>          QLIST_FOREACH(bus, &dev->child_bus, sibling) {
> +            local_errp = local_err ? NULL : &local_err;
>              object_property_set_bool(OBJECT(bus), false, "realized",
> -                                     &local_err);
> -            if (local_err != NULL) {
> -                break;
> -            }
> +                                     local_errp);
>          }
> -        if (qdev_get_vmsd(dev) && local_err == NULL) {
> +        if (qdev_get_vmsd(dev)) {
>              vmstate_unregister(dev, qdev_get_vmsd(dev), dev);
>          }
> -        if (dc->unrealize && local_err == NULL) {
> -            dc->unrealize(dev, &local_err);
> +        if (dc->unrealize) {
> +            local_errp = local_err ? NULL : &local_err;
> +            dc->unrealize(dev, local_errp);
>          }
>          dev->pending_deleted_event = true;
>      }

This looks much cleaner now, thanks, applied.

Andreas

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