linux-kernel - [tip: irq/core] irqchip/loongson-eiointc: Remove explicit interrupt affinity restore on resume

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Date: Tue, 13 Feb 2024 09:56:59 -0000
From: "tip-bot2 for Bibo Mao" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Bibo Mao <maobibo@...ngson.cn>, Thomas Gleixner <tglx@...utronix.de>,
 x86@...nel.org, linux-kernel@...r.kernel.org, maz@...nel.org
Subject: [tip: irq/core] irqchip/loongson-eiointc: Remove explicit interrupt
 affinity restore on resume

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     83c0708719f77018cd3b98b0011c9526a3e0e2ca
Gitweb:        https://git.kernel.org/tip/83c0708719f77018cd3b98b0011c9526a3e0e2ca
Author:        Bibo Mao <maobibo@...ngson.cn>
AuthorDate:    Tue, 30 Jan 2024 16:27:22 +08:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Tue, 13 Feb 2024 10:53:14 +01:00

irqchip/loongson-eiointc: Remove explicit interrupt affinity restore on resume

During suspend all CPUs except CPU0 are hot-unpluged and all active
interrupts are migrated to CPU0.

On resume eiointc_router_init() affines all interrupts to CPU0, so the
subsequent explicit interrupt affinity restore is redundant.

Remove it.

[ tglx: Rewrote changelog ]

Signed-off-by: Bibo Mao <maobibo@...ngson.cn>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20240130082722.2912576-4-maobibo@loongson.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 fad22e2..405f622 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 = {