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>
diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c
index 904623d..0d40717 100644
--- a/drivers/crypto/mv_cesa.c
+++ b/drivers/crypto/mv_cesa.c
@@ -423,6 +423,15 @@
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 @@
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);
}
}