linux-kernel - [PATCH RFC V3 02/11] genirq/generic_chip: export irq_unmap_generic

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Date:   Sat, 11 Jun 2022 19:03:44 +0800
From:   Jianmin Lv <lvjianmin@...ngson.cn>
To:     Thomas Gleixner <tglx@...utronix.de>, Marc Zyngier <maz@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Hanjun Guo <guohanjun@...wei.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Xuefeng Li <lixuefeng@...ngson.cn>,
        Huacai Chen <chenhuacai@...il.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Huacai Chen <chenhuacai@...ngson.cn>,
        Jianmin Lv <lvjianmin@...ngson.cn>
Subject: [PATCH RFC V3 02/11] genirq/generic_chip: export irq_unmap_generic_chip

Some irq controllers have to re-implement a private version for
irq_generic_chip_ops, because they have a different xlate to translate
hwirq. Export irq_unmap_generic_chip for reusing in user defined
ops.

Signed-off-by: Jianmin Lv <lvjianmin@...ngson.cn>
---
 include/linux/irq.h       | 1 +
 kernel/irq/generic-chip.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 848e1e1..b3747f4 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -1120,6 +1120,7 @@ struct irq_domain_chip_generic {
 /* Setup functions for irq_chip_generic */
 int irq_map_generic_chip(struct irq_domain *d, unsigned int virq,
 			 irq_hw_number_t hw_irq);
+void irq_unmap_generic_chip(struct irq_domain *d, unsigned int virq);
 struct irq_chip_generic *
 irq_alloc_generic_chip(const char *name, int nr_ct, unsigned int irq_base,
 		       void __iomem *reg_base, irq_flow_handler_t handler);
diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index f0862eb..c653cd3 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -431,7 +431,7 @@ int irq_map_generic_chip(struct irq_domain *d, unsigned int virq,
 	return 0;
 }
 
-static void irq_unmap_generic_chip(struct irq_domain *d, unsigned int virq)
+void irq_unmap_generic_chip(struct irq_domain *d, unsigned int virq)
 {
 	struct irq_data *data = irq_domain_get_irq_data(d, virq);
 	struct irq_domain_chip_generic *dgc = d->gc;
-- 
1.8.3.1