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| author | Phil Sutter <phil.sutter@viprinet.com> | 2012-05-25 15:54:49 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2012-06-12 16:46:05 +0800 |
| commit | 4d03c5047a07a62563e1a8fa798ea258f048bfde (patch) | |
| tree | a4f90fbc4c7dfb4dd3dc7f8e820b2e19c501a451 /drivers/crypto/mv_cesa.c | |
| parent | 5741d2eeaee28b37a4711a1776f716b274f3d2e4 (diff) | |
| download | lwn-4d03c5047a07a62563e1a8fa798ea258f048bfde.tar.gz lwn-4d03c5047a07a62563e1a8fa798ea258f048bfde.zip | |
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 <phil.sutter@viprinet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/mv_cesa.c')
| -rw-r--r-- | drivers/crypto/mv_cesa.c | 19 |
1 files 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); } } |