linux-kernel - [PATCH] irqdomain: fix up const problem in irq_domain_set

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Message-ID: <2025121731-facing-unhitched-63ae@gregkh>
Date: Wed, 17 Dec 2025 13:46:32 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: tglx@...utronix.de
Cc: linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH] irqdomain: fix up const problem in irq_domain_set_name()

In irq_domain_set_name() a const pointer is passed in, and then the
const is "lost" when container_of() is called.  Fix this up by properly
preserving the const pointer attribute when container_of() is used to
enforce the fact that this pointer should not have anything at it
changed.

Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 kernel/irq/irqdomain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 6991ef58bc5f..b5dda11b9caf 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -187,7 +187,7 @@ static int irq_domain_set_name(struct irq_domain *domain, const struct irq_domai
 	const struct fwnode_handle *fwnode = info->fwnode;
 
 	if (is_fwnode_irqchip(fwnode)) {
-		struct irqchip_fwid *fwid = container_of(fwnode, struct irqchip_fwid, fwnode);
+		const struct irqchip_fwid *fwid = container_of(fwnode, struct irqchip_fwid, fwnode);
 
 		/*
 		 * The name_suffix is only intended to be used to avoid a name
-- 
2.52.0