dm: replace simple_strtoul

Replace obsolete simple_strtoul() with kstrtou8/kstrtouint.

Signed-off-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 3f06df59fd82..e2b32401ecc7 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1241,7 +1241,6 @@ static void kcryptd_queue_crypt(struct dm_crypt_io *io)
 static int crypt_decode_key(u8 *key, char *hex, unsigned int size)
 {
         char buffer[3];
-        char *endp;
         unsigned int i;
 
         buffer[2] = '\0';
@@ -1250,9 +1249,7 @@ static int crypt_decode_key(u8 *key, char *hex, unsigned int size)
                 buffer[0] = *hex++;
                 buffer[1] = *hex++;
 
-                key[i] = (u8)simple_strtoul(buffer, &endp, 16);
-
-                if (endp != &buffer[2])
+                if (kstrtou8(buffer, 16, &key[i]))
                         return -EINVAL;
         }