linux-kernel - [PATCH v4 3/3] irqchip/loongson-eiointc: Refine irq affinity setting during resume

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Date: Thu, 25 Jan 2024 19:36:23 +0800
From: Bibo Mao <maobibo@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>,
	Jiaxun Yang <jiaxun.yang@...goat.com>,
	Thomas Gleixner <tglx@...utronix.de>
Cc: linux-mips@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Sergey Shtylyov <s.shtylyov@....ru>,
	lvjianmin@...ngson.cn
Subject: [PATCH v4 3/3] irqchip/loongson-eiointc: Refine irq affinity setting during resume

During suspend and resume, CPUs except CPU0 are hot-unpluged and IRQs
are migrated to CPU0. So it is not necessary to restore irq affinity for
eiointc irq controller when system resumes. This patch removes the piece
of code about irq affinity restoring in function eiointc_resume.

Signed-off-by: Bibo Mao <maobibo@...ngson.cn>
---
 drivers/irqchip/irq-loongson-eiointc.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c
index 6a71a8c29ac7..b64cbe3052e8 100644
--- a/drivers/irqchip/irq-loongson-eiointc.c
+++ b/drivers/irqchip/irq-loongson-eiointc.c
@@ -310,23 +310,7 @@ static int eiointc_suspend(void)
 
 static void eiointc_resume(void)
 {
-	int i, j;
-	struct irq_desc *desc;
-	struct irq_data *irq_data;
-
 	eiointc_router_init(0);
-
-	for (i = 0; i < nr_pics; i++) {
-		for (j = 0; j < eiointc_priv[0]->vec_count; j++) {
-			desc = irq_resolve_mapping(eiointc_priv[i]->eiointc_domain, j);
-			if (desc && desc->handle_irq && desc->handle_irq != handle_bad_irq) {
-				raw_spin_lock(&desc->lock);
-				irq_data = irq_domain_get_irq_data(eiointc_priv[i]->eiointc_domain, irq_desc_get_irq(desc));
-				eiointc_set_irq_affinity(irq_data, irq_data->common->affinity, 0);
-				raw_spin_unlock(&desc->lock);
-			}
-		}
-	}
 }
 
 static struct syscore_ops eiointc_syscore_ops = {
-- 
2.39.3