linux-kernel - [PATCH 4/7] irqchip/loongson-htvec: Adjust irqchip driver for 32BIT/64BIT

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Message-ID: <20251223080437.3367240-5-chenhuacai@loongson.cn>
Date: Tue, 23 Dec 2025 16:04:34 +0800
From: Huacai Chen <chenhuacai@...ngson.cn>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Xuefeng Li <lixuefeng@...ngson.cn>,
	Huacai Chen <chenhuacai@...il.com>,
	Jiaxun Yang <jiaxun.yang@...goat.com>,
	Huacai Chen <chenhuacai@...ngson.cn>
Subject: [PATCH 4/7] irqchip/loongson-htvec: Adjust irqchip driver for 32BIT/64BIT

irq_domain_alloc_fwnode() takes a parameter with the phys_addr_t type.
Currently we pass acpi_htvec->address to it. This can only work on 64BIT
platform because its type is u64, so cast it to phys_addr_t and then the
driver works on both 32BIT and 64BIT platform.

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
 drivers/irqchip/irq-loongson-htvec.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/irqchip/irq-loongson-htvec.c b/drivers/irqchip/irq-loongson-htvec.c
index d2be8e954e92..03c3992b39c8 100644
--- a/drivers/irqchip/irq-loongson-htvec.c
+++ b/drivers/irqchip/irq-loongson-htvec.c
@@ -298,8 +298,8 @@ static int __init acpi_cascade_irqdomain_init(void)
 int __init htvec_acpi_init(struct irq_domain *parent,
 				   struct acpi_madt_ht_pic *acpi_htvec)
 {
-	int i, ret;
-	int num_parents, parent_irq[8];
+	int i, ret, num_parents, parent_irq[8];
+	phys_addr_t addr = acpi_htvec->address;
 	struct fwnode_handle *domain_handle;
 
 	if (!acpi_htvec)
@@ -307,7 +307,7 @@ int __init htvec_acpi_init(struct irq_domain *parent,
 
 	num_parents = HTVEC_MAX_PARENT_IRQ;
 
-	domain_handle = irq_domain_alloc_fwnode(&acpi_htvec->address);
+	domain_handle = irq_domain_alloc_fwnode(&addr);
 	if (!domain_handle) {
 		pr_err("Unable to allocate domain handle\n");
 		return -ENOMEM;
-- 
2.47.3