linux-kernel - [PATCH] irqchip/loongson-eiointc: Use early_cpu_to_node() instead of cpu_to

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Date: Tue, 18 Jun 2024 16:15:07 +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] irqchip/loongson-eiointc: Use early_cpu_to_node() instead of cpu_to_node()

When we use "nr_cpus=n" to hard limit the CPU number, cpu_to_node() is
not usable because it can only applied on "possible" CPUs. On the other
hand, early_cpu_to_node() can be always used instead.

Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
 drivers/irqchip/irq-loongson-eiointc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c
index c7ddebf312ad..8ba9082c1796 100644
--- a/drivers/irqchip/irq-loongson-eiointc.c
+++ b/drivers/irqchip/irq-loongson-eiointc.c
@@ -339,7 +339,7 @@ static int __init pch_msi_parse_madt(union acpi_subtable_headers *header,
 	int node;
 
 	if (cpu_has_flatmode)
-		node = cpu_to_node(eiointc_priv[nr_pics - 1]->node * CORES_PER_EIO_NODE);
+		node = early_cpu_to_node(eiointc_priv[nr_pics - 1]->node * CORES_PER_EIO_NODE);
 	else
 		node = eiointc_priv[nr_pics - 1]->node;
 
@@ -431,7 +431,7 @@ int __init eiointc_acpi_init(struct irq_domain *parent,
 		goto out_free_handle;
 
 	if (cpu_has_flatmode)
-		node = cpu_to_node(acpi_eiointc->node * CORES_PER_EIO_NODE);
+		node = early_cpu_to_node(acpi_eiointc->node * CORES_PER_EIO_NODE);
 	else
 		node = acpi_eiointc->node;
 	acpi_set_vec_parent(node, priv->eiointc_domain, pch_group);
-- 
2.43.0