linux-kernel - [PATCH 5/7] irqchip/loongson-pch-msi: Adjust irqchip driver for 32BIT/64BIT

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Message-ID: <20251223080437.3367240-6-chenhuacai@loongson.cn>
Date: Tue, 23 Dec 2025 16:04:35 +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 5/7] irqchip/loongson-pch-msi: Adjust irqchip driver for 32BIT/64BIT

irq_domain_alloc_fwnode() takes a parameter with the phys_addr_t type.
Currently we pass acpi_pchmsi->msg_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-pch-msi.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/irqchip/irq-loongson-pch-msi.c b/drivers/irqchip/irq-loongson-pch-msi.c
index 4aedc9b90ff7..8500662bdb33 100644
--- a/drivers/irqchip/irq-loongson-pch-msi.c
+++ b/drivers/irqchip/irq-loongson-pch-msi.c
@@ -263,11 +263,12 @@ struct fwnode_handle *get_pch_msi_handle(int pci_segment)
 
 int __init pch_msi_acpi_init(struct irq_domain *parent, struct acpi_madt_msi_pic *acpi_pchmsi)
 {
-	int ret;
+	phys_addr_t msg_address = acpi_pchmsi->msg_address;
 	struct fwnode_handle *domain_handle;
+	int ret;
 
-	domain_handle = irq_domain_alloc_fwnode(&acpi_pchmsi->msg_address);
-	ret = pch_msi_init(acpi_pchmsi->msg_address, acpi_pchmsi->start,
+	domain_handle = irq_domain_alloc_fwnode(&msg_address);
+	ret = pch_msi_init(msg_address, acpi_pchmsi->start,
 				acpi_pchmsi->count, parent, domain_handle);
 	if (ret < 0)
 		irq_domain_free_fwnode(domain_handle);
-- 
2.47.3