linux-kernel - [PATCH v3 10/13] genirq/msi: Provide default .irq

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Message-Id: <20210629125010.458872-11-valentin.schneider@arm.com>
Date:   Tue, 29 Jun 2021 13:50:07 +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: [PATCH v3 10/13] genirq/msi: Provide default .irq_ack() for MSI chips

MSI_FLAG_USE_DEF_CHIP_OPS can now provide a default .irq_eoi() to any
irqchip attached to an MSI domain. Complement it by adding a default
.irq_ack() implementation.

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

diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index c97590945e99..127e0dd72b60 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -274,6 +274,8 @@ static void msi_domain_update_chip_ops(struct msi_domain_info *info)
 	BUG_ON(!chip || !chip->irq_mask || !chip->irq_unmask);
 	if (!chip->irq_set_affinity)
 		chip->irq_set_affinity = msi_domain_set_affinity;
+	if (!chip->irq_ack)
+		chip->irq_ack = irq_chip_ack_parent;
 	if (!chip->irq_eoi)
 		chip->irq_eoi = irq_chip_eoi_parent;
 }
-- 
2.25.1