Re: [patch 13/39] PCI/MSI: Use msi_domain_info::bus_token

[Bjorn Helgaas]

On Fri, Nov 11, 2022 at 02:54:35PM +0100, Thomas Gleixner wrote:
> From: Ahmed S. Darwish <darwi@xxxxxxxxxxxxx>
> 
> Set the bus token in the msi_domain_info structure and let the core code
> handle the update.
> 
> Signed-off-by: Ahmed S. Darwish <darwi@xxxxxxxxxxxxx>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>

> ---
>  drivers/pci/msi/irqdomain.c |   11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 
> --- a/drivers/pci/msi/irqdomain.c
> +++ b/drivers/pci/msi/irqdomain.c
> @@ -162,8 +162,6 @@ struct irq_domain *pci_msi_create_irq_do
>  					     struct msi_domain_info *info,
>  					     struct irq_domain *parent)
>  {
> -	struct irq_domain *domain;
> -
>  	if (WARN_ON(info->flags & MSI_FLAG_LEVEL_CAPABLE))
>  		info->flags &= ~MSI_FLAG_LEVEL_CAPABLE;
>  
> @@ -178,13 +176,10 @@ struct irq_domain *pci_msi_create_irq_do
>  
>  	/* PCI-MSI is oneshot-safe */
>  	info->chip->flags |= IRQCHIP_ONESHOT_SAFE;
> +	/* Let the core update the bus token */
> +	info->bus_token = DOMAIN_BUS_PCI_MSI;
>  
> -	domain = msi_create_irq_domain(fwnode, info, parent);
> -	if (!domain)
> -		return NULL;
> -
> -	irq_domain_update_bus_token(domain, DOMAIN_BUS_PCI_MSI);
> -	return domain;
> +	return msi_create_irq_domain(fwnode, info, parent);
>  }
>  EXPORT_SYMBOL_GPL(pci_msi_create_irq_domain);
>  
>