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crypto: mv_cesa - copy remaining bytes to SRAM only when needed

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Signed-off-by: Phil Sutter <phil.sutter@viprinet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Phil Sutter 2011-05-05 15:29:05 +02:00 • committed by Herbert Xu
parent 8652348754
commit 7759995c75
1 changed files with 6 additions and 6 deletions
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12
drivers/crypto/mv_cesa.c
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@ -525,12 +525,6 @@ static void mv_start_new_hash_req(struct ahash_request *req)
hw_bytes = req->nbytes + ctx->extra_bytes; hw_bytes = req->nbytes + ctx->extra_bytes;
old_extra_bytes = ctx->extra_bytes; old_extra_bytes = ctx->extra_bytes;
if (unlikely(ctx->extra_bytes)) {
memcpy(cpg->sram + SRAM_DATA_IN_START, ctx->buffer,
ctx->extra_bytes);
p->crypt_len = ctx->extra_bytes;
}
ctx->extra_bytes = hw_bytes % SHA1_BLOCK_SIZE; ctx->extra_bytes = hw_bytes % SHA1_BLOCK_SIZE;
if (ctx->extra_bytes != 0 if (ctx->extra_bytes != 0
&& (!ctx->last_chunk || ctx->count > MAX_HW_HASH_SIZE)) && (!ctx->last_chunk || ctx->count > MAX_HW_HASH_SIZE))
@ -546,6 +540,12 @@ static void mv_start_new_hash_req(struct ahash_request *req)
p->complete = mv_hash_algo_completion; p->complete = mv_hash_algo_completion;
p->process = mv_process_hash_current; p->process = mv_process_hash_current;
if (unlikely(old_extra_bytes)) {
memcpy(cpg->sram + SRAM_DATA_IN_START, ctx->buffer,
old_extra_bytes);
p->crypt_len = old_extra_bytes;
}
mv_process_hash_current(1); mv_process_hash_current(1);
} else { } else {
copy_src_to_buf(p, ctx->buffer + old_extra_bytes, copy_src_to_buf(p, ctx->buffer + old_extra_bytes,