linux-kernel - [PATCH v3 08/13] genirq/msi: Provide default .irq

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Message-Id: <20210629125010.458872-9-valentin.schneider@arm.com>
Date:   Tue, 29 Jun 2021 13:50:05 +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 08/13] genirq/msi: Provide default .irq_eoi() for MSI chips

Currently only platform-MSI irqchips get a default .irq_eoi() when
MSI_FLAG_USE_DEF_CHIP_OPS is set. There's no reason PCI-MSI irqchips
couldn't benefit from this too, so let all MSI irqchips benefit from this
default.

Signed-off-by: Valentin Schneider <valentin.schneider@....com>
---
 drivers/base/platform-msi.c | 2 --
 kernel/irq/msi.c            | 2 ++
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index 0b72b134a304..659881da0593 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -101,8 +101,6 @@ static void platform_msi_update_chip_ops(struct msi_domain_info *info)
 		chip->irq_mask = irq_chip_mask_parent;
 	if (!chip->irq_unmask)
 		chip->irq_unmask = irq_chip_unmask_parent;
-	if (!chip->irq_eoi)
-		chip->irq_eoi = irq_chip_eoi_parent;
 	if (!chip->irq_set_affinity)
 		chip->irq_set_affinity = msi_domain_set_affinity;
 	if (!chip->irq_write_msi_msg)
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index c41965e348b5..c97590945e99 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_eoi)
+		chip->irq_eoi = irq_chip_eoi_parent;
 }
 
 /**
-- 
2.25.1