linux-kernel - [RFC PATCH 05/10] genirq: Let purely flow-masked ONESHOT irqs through unmask_threaded

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Date:   Thu,  8 Apr 2021 16:43:21 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     Marc Zyngier <maz@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Vincenzo Frascino <vincenzo.frascino@....com>
Subject: [RFC PATCH 05/10] genirq: Let purely flow-masked ONESHOT irqs through unmask_threaded_irq()

A subsequent patch will let IRQs end up in irq_finalize_oneshot() without
IRQD_IRQ_MASKED, but with IRQD_IRQ_FLOW_MASKED set instead. Let such IRQs
receive their final ->irq_eoi().

Signed-off-by: Valentin Schneider <valentin.schneider@....com>
---
 kernel/irq/manage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index e976c4927b25..59c8056d6714 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1076,7 +1076,7 @@ static void irq_finalize_oneshot(struct irq_desc *desc,
 	desc->threads_oneshot &= ~action->thread_mask;
 
 	if (!desc->threads_oneshot && !irqd_irq_disabled(&desc->irq_data) &&
-	    irqd_irq_masked(&desc->irq_data))
+	    (irqd_irq_masked(&desc->irq_data) || irqd_irq_flow_masked(&desc->irq_data)))
 		unmask_threaded_irq(desc);
 
 out_unlock:
-- 
2.25.1