linux-kernel - [PATCH] genirq/proc: Replace snprintf with strscpy in register_handler

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Message-ID: <20260127224949.441391-2-thorsten.blum@linux.dev>
Date: Tue, 27 Jan 2026 23:49:49 +0100
From: Thorsten Blum <thorsten.blum@...ux.dev>
To: Thomas Gleixner <tglx@...nel.org>
Cc: Thorsten Blum <thorsten.blum@...ux.dev>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] genirq/proc: Replace snprintf with strscpy in register_handler_proc

Replace snprintf("%s", ...) with the faster and more direct strscpy().

Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev>
---
 kernel/irq/proc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 77258eafbf63..b0999a4f1f68 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -12,6 +12,7 @@
 #include <linux/interrupt.h>
 #include <linux/kernel_stat.h>
 #include <linux/mutex.h>
+#include <linux/string.h>
 
 #include "internals.h"
 
@@ -317,7 +318,7 @@ void register_handler_proc(unsigned int irq, struct irqaction *action)
 	if (!desc->dir || action->dir || !action->name || !name_unique(irq, action))
 		return;
 
-	snprintf(name, MAX_NAMELEN, "%s", action->name);
+	strscpy(name, action->name);
 
 	/* create /proc/irq/1234/handler/ */
 	action->dir = proc_mkdir(name, desc->dir);
-- 
Thorsten Blum <thorsten.blum@...ux.dev>
GPG: 1D60 735E 8AEF 3BE4 73B6  9D84 7336 78FD 8DFE EAD4