[PATCH] ocfs2: replace deprecated simple_strtol with kstrtol

[Daniel Yang]

The function simple_strtol ignores overflows and has an awkward
interface for error checking. Replace with the recommended kstrtol
function leads to clearer error checking and safer conversions.

Signed-off-by: Daniel Yang <danielyangkang@xxxxxxxxx>
---
 fs/ocfs2/cluster/heartbeat.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 4b9f45d70..dff18efbc 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2004, 2005 Oracle.  All rights reserved.
  */
 
+#include "linux/kstrtox.h"
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/jiffies.h>
@@ -1777,8 +1778,9 @@ static ssize_t o2hb_region_dev_store(struct config_item *item,
 	if (o2nm_this_node() == O2NM_MAX_NODES)
 		goto out;
 
-	fd = simple_strtol(p, &p, 0);
-	if (!p || (*p && (*p != '\n')))
+	int p_to_long_ret = kstrtol(p, 0, &fd);
+
+	if (p_to_long_ret < 0)
 		goto out;
 
 	if (fd < 0 || fd >= INT_MAX)
-- 
2.39.5