On Sun, Oct 11, 2020 at 09:03:32PM +0200, Philippe Mathieu-Daudé wrote:
> The Grackle PCI host model expects the interrupt controller
> being set, but does not verify it is present. Add a check to
> help developers using this model.

I don't think thaqt's very likely, but, sure, applied to ppc-for-5.2

> 
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  hw/pci-host/grackle.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/hw/pci-host/grackle.c b/hw/pci-host/grackle.c
> index 57c29b20afb..20361d215ca 100644
> --- a/hw/pci-host/grackle.c
> +++ b/hw/pci-host/grackle.c
> @@ -76,6 +76,10 @@ static void grackle_realize(DeviceState *dev, Error **errp)
>      GrackleState *s = GRACKLE_PCI_HOST_BRIDGE(dev);
>      PCIHostState *phb = PCI_HOST_BRIDGE(dev);
>  
> +    if (!s->pic) {
> +        error_setg(errp, TYPE_GRACKLE_PCI_HOST_BRIDGE ": 'pic' link not set");
> +        return;
> +    }
>      phb->bus = pci_register_root_bus(dev, NULL,
>                                       pci_grackle_set_irq,
>                                       pci_grackle_map_irq,

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson