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crypto: bcm - remove unused function do_decrypt() 

The do_decrypt() function in util.c in the BCM crypto driver is never
used, so remove it.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2019-01-18 18:26:42 -08:00 committed by Herbert Xu
parent aef027db48
commit 37ebffff65
2 changed files with 0 additions and 46 deletions
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40
drivers/crypto/bcm/util.c
View File

@ -201,46 +201,6 @@ struct sdesc {
char ctx[];
};
/* do a synchronous decrypt operation */
int do_decrypt(char *alg_name,
void *key_ptr, unsigned int key_len,
void *iv_ptr, void *src_ptr, void *dst_ptr,
unsigned int block_len)
{
struct scatterlist sg_in[1], sg_out[1];
struct crypto_blkcipher *tfm =
crypto_alloc_blkcipher(alg_name, 0, CRYPTO_ALG_ASYNC);
struct blkcipher_desc desc = {.tfm = tfm, .flags = 0 };
int ret = 0;
void *iv;
int ivsize;
flow_log("%s() name:%s block_len:%u\n", __func__, alg_name, block_len);
if (IS_ERR(tfm))
return PTR_ERR(tfm);
crypto_blkcipher_setkey((void *)tfm, key_ptr, key_len);
sg_init_table(sg_in, 1);
sg_set_buf(sg_in, src_ptr, block_len);
sg_init_table(sg_out, 1);
sg_set_buf(sg_out, dst_ptr, block_len);
iv = crypto_blkcipher_crt(tfm)->iv;
ivsize = crypto_blkcipher_ivsize(tfm);
memcpy(iv, iv_ptr, ivsize);
ret = crypto_blkcipher_decrypt(&desc, sg_out, sg_in, block_len);
crypto_free_blkcipher(tfm);
if (ret < 0)
pr_err("aes_decrypt failed %d\n", ret);
return ret;
}
/**
* do_shash() - Do a synchronous hash operation in software
* @name: The name of the hash algorithm

6
drivers/crypto/bcm/util.h
View File

@ -95,12 +95,6 @@ u32 spu_msg_sg_add(struct scatterlist **to_sg,
void add_to_ctr(u8 *ctr_pos, unsigned int increment);
/* do a synchronous decrypt operation */
int do_decrypt(char *alg_name,
void *key_ptr, unsigned int key_len,
void *iv_ptr, void *src_ptr, void *dst_ptr,
unsigned int block_len);
/* produce a message digest from data of length n bytes */
int do_shash(unsigned char *name, unsigned char *result,
const u8 *data1, unsigned int data1_len,