From: Thorsten Blum <thorsten.blum@linux.dev>
Date: Tue, 27 Jan 2026 22:49:49 +0000 (+0100)
Subject: genirq/proc: Replace snprintf with strscpy in register_handler_proc
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2dfc417414c6eea4e167b2f46283cded846c531a;p=thirdparty%2Flinux.git

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@linux.dev>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260127224949.441391-2-thorsten.blum@linux.dev
---

diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 77258eafbf632..b0999a4f1f688 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);