From 4d03c5047a07a62563e1a8fa798ea258f048bfde Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Fri, 25 May 2012 15:54:49 +0200 Subject: [PATCH] crypto: mv_cesa - fix for hash finalisation with data Since mv_hash_final_fallback() uses ctx->state, read out the digest state register before calling it. Signed-off-by: Phil Sutter Signed-off-by: Herbert Xu --- drivers/crypto/mv_cesa.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c index 904623d45c62..0d4071754352 100644 --- a/drivers/crypto/mv_cesa.c +++ b/drivers/crypto/mv_cesa.c @@ -423,6 +423,15 @@ out: return rc; } +static void mv_save_digest_state(struct mv_req_hash_ctx *ctx) +{ + ctx->state[0] = readl(cpg->reg + DIGEST_INITIAL_VAL_A); + ctx->state[1] = readl(cpg->reg + DIGEST_INITIAL_VAL_B); + ctx->state[2] = readl(cpg->reg + DIGEST_INITIAL_VAL_C); + ctx->state[3] = readl(cpg->reg + DIGEST_INITIAL_VAL_D); + ctx->state[4] = readl(cpg->reg + DIGEST_INITIAL_VAL_E); +} + static void mv_hash_algo_completion(void) { struct ahash_request *req = ahash_request_cast(cpg->cur_req); @@ -437,14 +446,12 @@ static void mv_hash_algo_completion(void) memcpy(req->result, cpg->sram + SRAM_DIGEST_BUF, crypto_ahash_digestsize(crypto_ahash_reqtfm (req))); - } else + } else { + mv_save_digest_state(ctx); mv_hash_final_fallback(req); + } } else { - ctx->state[0] = readl(cpg->reg + DIGEST_INITIAL_VAL_A); - ctx->state[1] = readl(cpg->reg + DIGEST_INITIAL_VAL_B); - ctx->state[2] = readl(cpg->reg + DIGEST_INITIAL_VAL_C); - ctx->state[3] = readl(cpg->reg + DIGEST_INITIAL_VAL_D); - ctx->state[4] = readl(cpg->reg + DIGEST_INITIAL_VAL_E); + mv_save_digest_state(ctx); } }