linux-kernel - [PATCH] irqchip/loongson-eiointc: Fix irq affinity setting

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Date:   Thu,  4 Aug 2022 10:54:21 +0800
From:   Huacai Chen <chenhuacai@...ngson.cn>
To:     Thomas Gleixner <tglx@...utronix.de>, Marc Zyngier <maz@...nel.org>
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: Fix irq affinity setting

In multi-node case, csr_any_send() should set EIOINTC_REG_ENABLE of
the first core of target node, not the first core of the whole.

Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
 drivers/irqchip/irq-loongson-eiointc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c
index 80d8ca6f2d46..317467857478 100644
--- a/drivers/irqchip/irq-loongson-eiointc.c
+++ b/drivers/irqchip/irq-loongson-eiointc.c
@@ -111,11 +111,15 @@ static int eiointc_set_irq_affinity(struct irq_data *d, const struct cpumask *af
 	regaddr = EIOINTC_REG_ENABLE + ((vector >> 5) << 2);
 
 	/* Mask target vector */
-	csr_any_send(regaddr, EIOINTC_ALL_ENABLE & (~BIT(vector & 0x1F)), 0x0, 0);
+	csr_any_send(regaddr, EIOINTC_ALL_ENABLE & (~BIT(vector & 0x1F)),
+			0x0, priv->node * CORES_PER_EIO_NODE);
+
 	/* Set route for target vector */
 	eiointc_set_irq_route(vector, cpu, priv->node, &priv->node_map);
+
 	/* Unmask target vector */
-	csr_any_send(regaddr, EIOINTC_ALL_ENABLE, 0x0, 0);
+	csr_any_send(regaddr, EIOINTC_ALL_ENABLE,
+			0x0, priv->node * CORES_PER_EIO_NODE);
 
 	irq_data_update_effective_affinity(d, cpumask_of(cpu));
 
-- 
2.31.1