From: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
There is no need to have a duplication of the generic library, i.e. hex2bin().
Replace the open coded variant.
Signed-off-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
---
drivers/md/dm-crypt.c | 27 ++-------------------------
1 file changed, 2 insertions(+), 25 deletions(-)
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 70f765f50c59..ebf9e72d479b 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1814,30 +1814,6 @@ static void kcryptd_queue_crypt(struct dm_crypt_io *io)
queue_work(cc->crypt_queue, &io->work);
}
-/*
- * Decode key from its hex representation
- */
-static int crypt_decode_key(u8 *key, char *hex, unsigned int size)
-{
- char buffer[3];
- unsigned int i;
-
- buffer[2] = '\0';
-
- for (i = 0; i < size; i++) {
- buffer[0] = *hex++;
- buffer[1] = *hex++;
-
- if (kstrtou8(buffer, 16, &key[i]))
- return -EINVAL;
- }
-
- if (*hex != '\0')
- return -EINVAL;
-
- return 0;
-}
-
static void crypt_free_tfms_aead(struct crypt_config *cc)
{
if (!cc->cipher_tfm.tfms_aead)
@@ -2136,7 +2112,8 @@ static int crypt_set_key(struct crypt_config *cc, char *key)
kzfree(cc->key_string);
cc->key_string = NULL;
- if (cc->key_size && crypt_decode_key(cc->key, key, cc->key_size) < 0)
+ /* Decode key from its hex representation. */
+ if (cc->key_size && hex2bin(cc->key, key, cc->key_size) < 0)
goto out;
r = crypt_setkey(cc);
--
2.11.0
--
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