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genirq: export irq_can_set_affinity() for module drivers

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Export irq_can_set_affinity() for loadable drivers that need a runtime
check for IRQ affinity capability.

In hierarchical IRQ setups where the effective irqchip path lacks
.irq_set_affinity(), drivers may need to switch to a fallback policy.
Without this export, module drivers cannot use the core helper and have
to open-code equivalent checks.

Signed-off-by: Hangtian Zhu <hangtian.zhu@oss.qualcomm.com>
Acked-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260519011627.713068-2-hangtian.zhu@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Hangtian Zhu
2026-05-19 09:16:26 +08:00
committed by Jeff Johnson
parent dc59e4fea9
commit 25e638447e
1 changed files with 1 additions and 0 deletions
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1
kernel/irq/manage.c
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@@ -171,6 +171,7 @@ int irq_can_set_affinity(unsigned int irq)
{
return __irq_can_set_affinity(irq_to_desc(irq));
}
EXPORT_SYMBOL_GPL(irq_can_set_affinity);
/**
* irq_can_set_affinity_usr - Check if affinity of a irq can be set from user space