[PATCH v3 10/13] genirq/msi: Provide default .irq_ack() for MSI chips

[Valentin Schneider]

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 at arm.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