[irqchip: irq/irqchip-next] irqchip/mvebu-odmi: 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:     f743f54fa8d2bcb3f2891b783687d91b76a144f5
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/f743f54fa8d2bcb3f2891b783687d91b76a144f5
Author:        Johan Hovold <johan+linaro@xxxxxxxxxx>
AuthorDate:    Mon, 13 Feb 2023 11:43:01 +01:00
Committer:     Marc Zyngier <maz@xxxxxxxxxx>
CommitterDate: Mon, 13 Feb 2023 19:31:25 

irqchip/mvebu-odmi: 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/20230213104302.17307-20-johan+linaro@xxxxxxxxxx
---
 drivers/irqchip/irq-mvebu-odmi.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/irqchip/irq-mvebu-odmi.c b/drivers/irqchip/irq-mvebu-odmi.c
index dc4145a..1080915 100644
--- a/drivers/irqchip/irq-mvebu-odmi.c
+++ b/drivers/irqchip/irq-mvebu-odmi.c
@@ -161,7 +161,7 @@ static struct msi_domain_info odmi_msi_domain_info = {
 static int __init mvebu_odmi_init(struct device_node *node,
 				  struct device_node *parent)
 {
-	struct irq_domain *inner_domain, *plat_domain;
+	struct irq_domain *parent_domain, *inner_domain, *plat_domain;
 	int ret, i;
 
 	if (of_property_read_u32(node, "marvell,odmi-frames", &odmis_count))
@@ -197,16 +197,17 @@ static int __init mvebu_odmi_init(struct device_node *node,
 		}
 	}
 
-	inner_domain = irq_domain_create_linear(of_node_to_fwnode(node),
-						odmis_count * NODMIS_PER_FRAME,
-						&odmi_domain_ops, NULL);
+	parent_domain = irq_find_host(parent);
+
+	inner_domain = irq_domain_create_hierarchy(parent_domain, 0,
+						   odmis_count * NODMIS_PER_FRAME,
+						   of_node_to_fwnode(node),
+						   &odmi_domain_ops, NULL);
 	if (!inner_domain) {
 		ret = -ENOMEM;
 		goto err_unmap;
 	}
 
-	inner_domain->parent = irq_find_host(parent);
-
 	plat_domain = platform_msi_create_irq_domain(of_node_to_fwnode(node),
 						     &odmi_msi_domain_info,
 						     inner_domain);