PCI/MSI: Use msi_domain_info:: Bus_token

Set the bus token in the msi_domain_info structure and let the core code
handle the update.

Signed-off-by: Ahmed S. Darwish <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Acked-by: Bjorn Helgaas <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Ahmed S. Darwish

drivers/pci/msi/irqdomain.c

@@ -162,8 +162,6 @@ struct irq_domain *pci_msi_create_irq_domain(struct fwnode_handle *fwnode,
 					     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_domain(struct fwnode_handle *fwnode,
 
 	/* 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);