linux-kernel - [PATCH 03/12] irqchip/riscv-imsic: Convert to msi_create_parent_irq

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Message-Id: <b906a38d443577de45923b335d80fc54c5638da0.1750860131.git.namcao@linutronix.de>
Date: Thu, 26 Jun 2025 16:49:00 +0200
From: Nam Cao <namcao@...utronix.de>
To: Marc Zyngier <maz@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Antoine Tenart <atenart@...nel.org>,
	Andrew Lunn <andrew@...n.ch>,
	Gregory Clement <gregory.clement@...tlin.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Huacai Chen <chenhuacai@...nel.org>,
	Jiaxun Yang <jiaxun.yang@...goat.com>,
	Anup Patel <anup@...infault.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	imx@...ts.linux.dev,
	linux-mips@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Subject: [PATCH 03/12] irqchip/riscv-imsic: Convert to msi_create_parent_irq_domain() helper

From: Marc Zyngier <maz@...nel.org>

Now that we have a concise helper to create an MSI parent domain,
switch the RISC-V letter soup over to that.

Signed-off-by: Marc Zyngier <maz@...nel.org>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Nam Cao <tglx@...utronix.de>
Link: https://lore.kernel.org/all/20241204124549.607054-6-maz@kernel.org
---
Cc: Anup Patel <anup@...infault.org>
Cc: Paul Walmsley <paul.walmsley@...ive.com>
Cc: Palmer Dabbelt <palmer@...belt.com>
Cc: Albert Ou <aou@...s.berkeley.edu>
Cc: Alexandre Ghiti <alex@...ti.fr>
Cc: linux-riscv@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/irqchip/irq-riscv-imsic-platform.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/irqchip/irq-riscv-imsic-platform.c b/drivers/irqchip/irq-riscv-imsic-platform.c
index 1b9fbfce95816..74a2a28f94030 100644
--- a/drivers/irqchip/irq-riscv-imsic-platform.c
+++ b/drivers/irqchip/irq-riscv-imsic-platform.c
@@ -307,6 +307,11 @@ static const struct msi_parent_ops imsic_msi_parent_ops = {
 
 int imsic_irqdomain_init(void)
 {
+	struct irq_domain_info info = {
+		.fwnode		= imsic->fwnode,
+		.ops		= &imsic_base_domain_ops,
+		.host_data	= imsic,
+	};
 	struct imsic_global_config *global;
 
 	if (!imsic || !imsic->fwnode) {
@@ -320,16 +325,11 @@ int imsic_irqdomain_init(void)
 	}
 
 	/* Create Base IRQ domain */
-	imsic->base_domain = irq_domain_create_tree(imsic->fwnode,
-						    &imsic_base_domain_ops, imsic);
+	imsic->base_domain = msi_create_parent_irq_domain(&info, &imsic_msi_parent_ops);
 	if (!imsic->base_domain) {
 		pr_err("%pfwP: failed to create IMSIC base domain\n", imsic->fwnode);
 		return -ENOMEM;
 	}
-	imsic->base_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
-	imsic->base_domain->msi_parent_ops = &imsic_msi_parent_ops;
-
-	irq_domain_update_bus_token(imsic->base_domain, DOMAIN_BUS_NEXUS);
 
 	global = &imsic->global;
 	pr_info("%pfwP:  hart-index-bits: %d,  guest-index-bits: %d\n",
-- 
2.39.5