linux-kernel - [PATCH] irqchip/stm32: fix return value of stm32_exti_h_set

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Date:   Fri, 12 Jun 2020 09:29:01 +0200
From:   Ludovic Barre <ludovic.barre@...com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Rob Herring <robh+dt@...nel.org>
CC:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, Ludovic Barre <ludovic.barre@...com>
Subject: [PATCH] irqchip/stm32: fix return value of stm32_exti_h_set_affinity

exti hardware point of view, there is no specific action on set_affinity.
So the affinity must be forwarded to parent if there is a
descendent irqchips, otherwise just return IRQ_SET_MASK_OK_DONE.

Signed-off-by: Ludovic Barre <ludovic.barre@...com>
---
 drivers/irqchip/irq-stm32-exti.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
index faa8482c8246..1a0a60ee7140 100644
--- a/drivers/irqchip/irq-stm32-exti.c
+++ b/drivers/irqchip/irq-stm32-exti.c
@@ -555,7 +555,7 @@ static int stm32_exti_h_set_affinity(struct irq_data *d,
 	if (d->parent_data->chip)
 		return irq_chip_set_affinity_parent(d, dest, force);
 
-	return -EINVAL;
+	return IRQ_SET_MASK_OK_DONE;
 }
 
 static int __maybe_unused stm32_exti_h_suspend(void)
-- 
2.17.1