[irqchip: irq/irqchip-next] irqchip/gic-v2m: Use irq_domain_create_hierarchy()

[irqchip-bot for Johan Hovold]

The following commit has been merged into the irq/irqchip-next branch of irqchip:

Commit-ID:     e6e8cd62a56f9ed0dcdf8d01147709b59a111418
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/e6e8cd62a56f9ed0dcdf8d01147709b59a111418
Author:        Johan Hovold <johan+linaro@xxxxxxxxxx>
AuthorDate:    Mon, 13 Feb 2023 11:42:57 +01:00
Committer:     Marc Zyngier <maz@xxxxxxxxxx>
CommitterDate: Mon, 13 Feb 2023 19:31:25 

irqchip/gic-v2m: Use irq_domain_create_hierarchy()

Use the irq_domain_create_hierarchy() helper to create the hierarchical
domain, which both serves as documentation and avoids poking at
irqdomain internals.

Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
Tested-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
Tested-by: Mark-PK Tsai <mark-pk.tsai@xxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230213104302.17307-16-johan+linaro@xxxxxxxxxx
---
 drivers/irqchip/irq-gic-v2m.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c
index f4d7eeb..f1e75b3 100644
--- a/drivers/irqchip/irq-gic-v2m.c
+++ b/drivers/irqchip/irq-gic-v2m.c
@@ -287,15 +287,14 @@ static __init int gicv2m_allocate_domains(struct irq_domain *parent)
 	if (!v2m)
 		return 0;
 
-	inner_domain = irq_domain_create_tree(v2m->fwnode,
-					      &gicv2m_domain_ops, v2m);
+	inner_domain = irq_domain_create_hierarchy(parent, 0, 0, v2m->fwnode,
+						   &gicv2m_domain_ops, v2m);
 	if (!inner_domain) {
 		pr_err("Failed to create GICv2m domain\n");
 		return -ENOMEM;
 	}
 
 	irq_domain_update_bus_token(inner_domain, DOMAIN_BUS_NEXUS);
-	inner_domain->parent = parent;
 	pci_domain = pci_msi_create_irq_domain(v2m->fwnode,
 					       &gicv2m_msi_domain_info,
 					       inner_domain);