[PATCH] libfs: fix obsolete function

[Ding Xiang]

simple_strtoll is obsolete, and use kstrtoll instead

Signed-off-by: Ding Xiang <dingxiang@xxxxxxxxxxxxxxxxxxxx>
---
 fs/libfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/libfs.c b/fs/libfs.c
index 7e52e77..69cc01d 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -883,7 +883,8 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
 		goto out;
 
 	attr->set_buf[size] = '\0';
-	val = simple_strtoll(attr->set_buf, NULL, 0);
+	if (kstrtoll(attr->set_buf, 0, &val))
+		return -EINVAL;
 	ret = attr->set(attr->data, val);
 	if (ret == 0)
 		ret = len; /* on success, claim we got the whole input */
-- 
1.9.1