linux-kernel - [tip: irq/msi] irqchip/sifive-plic: Use riscv_get_intc

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Date: Fri, 23 Feb 2024 09:43:55 -0000
From: "tip-bot2 for Anup Patel" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Anup Patel <apatel@...tanamicro.com>, Thomas Gleixner <tglx@...utronix.de>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: irq/msi] irqchip/sifive-plic: Use riscv_get_intc_hwnode() to
 get parent fwnode

The following commit has been merged into the irq/msi branch of tip:

Commit-ID:     6c725f33d67b53f2d302c2c4509deae953fc6ade
Gitweb:        https://git.kernel.org/tip/6c725f33d67b53f2d302c2c4509deae953fc6ade
Author:        Anup Patel <apatel@...tanamicro.com>
AuthorDate:    Thu, 22 Feb 2024 15:09:52 +05:30
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Fri, 23 Feb 2024 10:18:44 +01:00

irqchip/sifive-plic: Use riscv_get_intc_hwnode() to get parent fwnode

The RISC-V INTC irqdomain is always the parent irqdomain of SiFive PLIC
so use riscv_get_intc_hwnode() to get the parent fwnode similar to other
RISC-V drivers which use local interrupts.

Signed-off-by: Anup Patel <apatel@...tanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20240222094006.1030709-5-apatel@ventanamicro.com

---
 drivers/irqchip/irq-sifive-plic.c |  9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c
index 299feef..208fad7 100644
--- a/drivers/irqchip/irq-sifive-plic.c
+++ b/drivers/irqchip/irq-sifive-plic.c
@@ -423,6 +423,7 @@ static int plic_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	unsigned long plic_quirks = 0;
 	struct plic_handler *handler;
+	struct irq_domain *domain;
 	struct plic_priv *priv;
 	bool cpuhp_setup;
 	unsigned int cpu;
@@ -502,11 +503,11 @@ static int plic_probe(struct platform_device *pdev)
 		}
 
 		/* Find parent domain and register chained handler */
-		if (!plic_parent_irq && irq_find_host(parent.np)) {
-			plic_parent_irq = irq_of_parse_and_map(to_of_node(dev->fwnode), i);
+		domain = irq_find_matching_fwnode(riscv_get_intc_hwnode(), DOMAIN_BUS_ANY);
+		if (!plic_parent_irq && domain) {
+			plic_parent_irq = irq_create_mapping(domain, RV_IRQ_EXT);
 			if (plic_parent_irq)
-				irq_set_chained_handler(plic_parent_irq,
-							plic_handle_irq);
+				irq_set_chained_handler(plic_parent_irq, plic_handle_irq);
 		}
 
 		/*