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Commit 37ebffff authored by Eric Biggers's avatar Eric Biggers Committed by Herbert Xu
Browse files

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: default avatarEric Biggers <ebiggers@google.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent aef027db

drivers/crypto/bcm/util.c

+0 −40
Original line number Diff line number Diff line
@@ -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

drivers/crypto/bcm/util.h

+0 −6
Original line number Diff line number Diff line
@@ -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,