[PATCH 4.9 07/78] genirq: Let GENERIC_IRQ_IPI select IRQ_DOMAIN_HIERARCHY

[Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>]

From: Marc Zyngier <maz@xxxxxxxxxx>

[ Upstream commit 151a535171be6ff824a0a3875553ea38570f4c05 ]

kernel/irq/ipi.c otherwise fails to compile if nothing else
selects it.

Fixes: 379b656446a3 ("genirq: Add GENERIC_IRQ_IPI Kconfig symbol")
Reported-by: Pavel Machek <pavel@xxxxxx>
Tested-by: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20201015101222.GA32747@amd
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 kernel/irq/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 3bbfd6a9c4756..bb3a46cbe034c 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -67,6 +67,7 @@ config IRQ_DOMAIN_HIERARCHY
 # Generic IRQ IPI support
 config GENERIC_IRQ_IPI
 	bool
+	select IRQ_DOMAIN_HIERARCHY
 
 # Generic MSI interrupt support
 config GENERIC_MSI_IRQ
-- 
2.27.0