[PATCH] genirq: Remove GENERIC_IRQ_LEGACY

From: Sebastian Andrzej Siewior
Date: Thu Aug 14 2025 - 13:00:09 EST


IA64 is gone and withit the last GENERIC_IRQ_LEGACY user.

Remove GENERIC_IRQ_LEGACY.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
include/linux/irq.h | 4 ----
kernel/irq/Kconfig | 4 ----
kernel/irq/irqdesc.c | 7 -------
3 files changed, 15 deletions(-)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 1d6b606a81efe..c9bcdbf6bc635 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -976,10 +976,6 @@ static inline void irq_free_desc(unsigned int irq)
irq_free_descs(irq, 1);
}

-#ifdef CONFIG_GENERIC_IRQ_LEGACY
-void irq_init_desc(unsigned int irq);
-#endif
-
/**
* struct irq_chip_regs - register offsets for struct irq_gci
* @enable: Enable register offset to reg_base
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 1da5e9d9da719..36673640c4fc2 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -6,10 +6,6 @@ menu "IRQ subsystem"
config MAY_HAVE_SPARSE_IRQ
bool

-# Legacy support, required for itanic
-config GENERIC_IRQ_LEGACY
- bool
-
# Enable the generic irq autoprobe mechanism
config GENERIC_IRQ_PROBE
bool
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index b64c57b44c203..db714d3014b5f 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -653,13 +653,6 @@ void irq_mark_irq(unsigned int irq)
irq_insert_desc(irq, irq_desc + irq);
}

-#ifdef CONFIG_GENERIC_IRQ_LEGACY
-void irq_init_desc(unsigned int irq)
-{
- free_desc(irq);
-}
-#endif
-
#endif /* !CONFIG_SPARSE_IRQ */

int handle_irq_desc(struct irq_desc *desc)
--
2.50.1