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crypto: sha256-mb - remove HASH_FIRST flag

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The HASH_FIRST flag is never set.  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 2018-01-24 19:10:15 -08:00 committed by Herbert Xu
parent 7a95cbd9a9
commit ee689d164a
2 changed files with 6 additions and 29 deletions
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27
arch/x86/crypto/sha256-mb/sha256_mb.c
View file

@ -106,14 +106,6 @@ static asmlinkage struct job_sha256* (*sha256_job_mgr_flush)
static asmlinkage struct job_sha256* (*sha256_job_mgr_get_comp_job)
(struct sha256_mb_mgr *state);
inline void sha256_init_digest(uint32_t *digest)
{
static const uint32_t initial_digest[SHA256_DIGEST_LENGTH] = {
SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3,
SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7};
memcpy(digest, initial_digest, sizeof(initial_digest));
}
inline uint32_t sha256_pad(uint8_t padblock[SHA256_BLOCK_SIZE * 2],
uint64_t total_len)
{
@ -245,10 +237,8 @@ static struct sha256_hash_ctx *sha256_ctx_mgr_submit(struct sha256_ctx_mgr *mgr,
uint32_t len,
int flags)
{
if (flags & (~HASH_ENTIRE)) {
/* User should not pass anything other than FIRST, UPDATE
* or LAST
*/
if (flags & ~(HASH_UPDATE | HASH_LAST)) {
/* User should not pass anything other than UPDATE or LAST */
ctx->error = HASH_CTX_ERROR_INVALID_FLAGS;
return ctx;
}
@ -259,23 +249,12 @@ static struct sha256_hash_ctx *sha256_ctx_mgr_submit(struct sha256_ctx_mgr *mgr,
return ctx;
}
if ((ctx->status & HASH_CTX_STS_COMPLETE) && !(flags & HASH_FIRST)) {
if (ctx->status & HASH_CTX_STS_COMPLETE) {
/* Cannot update a finished job. */
ctx->error = HASH_CTX_ERROR_ALREADY_COMPLETED;
return ctx;
}
if (flags & HASH_FIRST) {
/* Init digest */
sha256_init_digest(ctx->job.result_digest);
/* Reset byte counter */
ctx->total_length = 0;
/* Clear extra blocks */
ctx->partial_block_buffer_length = 0;
}
/* If we made it here, there was no error during this call to submit */
ctx->error = HASH_CTX_ERROR_NONE;

8
arch/x86/crypto/sha256-mb/sha256_mb_ctx.h
View file

@ -57,11 +57,9 @@
#include "sha256_mb_mgr.h"
#define HASH_UPDATE 0x00
#define HASH_FIRST 0x01
#define HASH_LAST 0x02
#define HASH_ENTIRE 0x03
#define HASH_DONE 0x04
#define HASH_FINAL 0x08
#define HASH_LAST 0x01
#define HASH_DONE 0x02
#define HASH_FINAL 0x04
#define HASH_CTX_STS_IDLE 0x00
#define HASH_CTX_STS_PROCESSING 0x01