[PATCH 5.10 083/545] genirq: GENERIC_IRQ_IPI depends on SMP

From: Greg Kroah-Hartman
Date: Fri Aug 19 2022 - 11:58:55 EST


From: Samuel Holland <samuel@xxxxxxxxxxxx>

[ Upstream commit 0f5209fee90b4544c58b4278d944425292789967 ]

The generic IPI code depends on the IRQ affinity mask being allocated
and initialized. This will not be the case if SMP is disabled. Fix up
the remaining driver that selected GENERIC_IRQ_IPI in a non-SMP config.

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220701200056.46555-3-samuel@xxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/irqchip/Kconfig | 2 +-
kernel/irq/Kconfig | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index c4b971cd239d..3c24bf45263c 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -178,7 +178,7 @@ config MADERA_IRQ
config IRQ_MIPS_CPU
bool
select GENERIC_IRQ_CHIP
- select GENERIC_IRQ_IPI if SYS_SUPPORTS_MULTITHREADING
+ select GENERIC_IRQ_IPI if SMP && SYS_SUPPORTS_MULTITHREADING
select IRQ_DOMAIN
select GENERIC_IRQ_EFFECTIVE_AFF_MASK

diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 164a031cfdb6..0f2a44fc0971 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -82,6 +82,7 @@ config IRQ_FASTEOI_HIERARCHY_HANDLERS
# Generic IRQ IPI support
config GENERIC_IRQ_IPI
bool
+ depends on SMP
select IRQ_DOMAIN_HIERARCHY

# Generic MSI interrupt support
--
2.35.1