[PATCH] genirq/proc: Replace snprintf with strscpy in register_handler_proc

From: Thorsten Blum

Date: Tue Jan 27 2026 - 17:50:18 EST


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

Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxx>
---
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@xxxxxxxxx>
GPG: 1D60 735E 8AEF 3BE4 73B6 9D84 7336 78FD 8DFE EAD4