[PATCH 1/2] watchdog: use kstrtouint to parse softlockup_panic=

[林濬哲]

simple_strtoul() is deprecated. Replace it with kstrtouint(), which
also reports parse errors back to the boot process instead of
silently accepting garbage.

Signed-off-by: 林濬哲 <m18667909625@xxxxxxx>
Assisted-by: AI coding assistant (disclosed per kernel AI guidelines)
---
 kernel/watchdog.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index e5134ad7b663..420f08140713 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -17,6 +17,7 @@
 #include <linux/irq.h>
 #include <linux/irqdesc.h>
 #include <linux/kernel_stat.h>
+#include <linux/kstrtox.h>
 #include <linux/kvm_para.h>
 #include <linux/math64.h>
 #include <linux/mm.h>
@@ -422,8 +423,10 @@ static unsigned long soft_lockup_nmi_warn;
 
 static int __init softlockup_panic_setup(char *str)
 {
-	softlockup_panic = simple_strtoul(str, NULL, 0);
-	return 1;
+	int ret;
+
+	ret = kstrtouint(str, 0, &softlockup_panic);
+	return ret ? ret : 1;
 }
 __setup("softlockup_panic=", softlockup_panic_setup);
 
-- 
2.53.0