From e944e03e336f7ffa02aabc71291933d93dcd077c Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 27 Apr 2017 16:52:04 +0300 Subject: [PATCH] dm crypt: replace custom implementation of hex2bin() 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 Tested-by: Milan Broz Signed-off-by: Mike Snitzer --- 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 e2de5715d528..24f3b9fdeeb6 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);