Re: [PATCH v3 1/9] hw: eliminate qdev_try_new, isa_try_new & usb_try_new

[Peter Xu <peterx@redhat.com>]

On Fri, Nov 15, 2024 at 05:25:13PM +0000, Daniel P. Berrangé wrote:
> diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
> index 40b2567aa7..558f17d3ba 100644
> --- a/hw/s390x/s390-pci-bus.c
> +++ b/hw/s390x/s390-pci-bus.c
> @@ -922,11 +922,7 @@ static S390PCIBusDevice *s390_pci_device_new(S390pciState *s,
>      Error *local_err = NULL;
>      DeviceState *dev;
>  
> -    dev = qdev_try_new(TYPE_S390_PCI_DEVICE);
> -    if (!dev) {
> -        error_setg(errp, "zPCI device could not be created");
> -        return NULL;
> -    }
> +    dev = qdev_new(TYPE_S390_PCI_DEVICE);

This one used to allow failures, but now it asserts.  Especially, see:

b6e67ecc7b ("s390x/pci: properly fail if the zPCI device cannot be created")

Would it be safer to use module_object_class_by_name() too here?

All the rest changes look sane.

>  
>      if (!object_property_set_str(OBJECT(dev), "target", target, &local_err)) {
>          object_unparent(OBJECT(dev));

-- 
Peter Xu