diff options
| -rw-r--r-- | drivers/crypto/aspeed/aspeed-hace-hash.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/crypto/aspeed/aspeed-hace-hash.c b/drivers/crypto/aspeed/aspeed-hace-hash.c index d7c7f867d6e1..3bfb7db96c40 100644 --- a/drivers/crypto/aspeed/aspeed-hace-hash.c +++ b/drivers/crypto/aspeed/aspeed-hace-hash.c @@ -420,6 +420,32 @@ static int aspeed_hace_hash_handle_queue(struct aspeed_hace_dev *hace_dev, hace_dev->crypt_engine_hash, req); } +static noinline int aspeed_ahash_fallback(struct ahash_request *req) +{ + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req); + HASH_FBREQ_ON_STACK(fbreq, req); + u8 *state = rctx->buffer; + struct scatterlist sg[2]; + struct scatterlist *ssg; + int ret; + + ssg = scatterwalk_ffwd(sg, req->src, rctx->offset); + ahash_request_set_crypt(fbreq, ssg, req->result, + rctx->total - rctx->offset); + + ret = aspeed_sham_export(req, state) ?: + crypto_ahash_import_core(fbreq, state); + + if (rctx->flags & SHA_FLAGS_FINUP) + ret = ret ?: crypto_ahash_finup(fbreq); + else + ret = ret ?: crypto_ahash_update(fbreq); + crypto_ahash_export_core(fbreq, state) ?: + aspeed_sham_import(req, state); + HASH_REQUEST_ZERO(fbreq); + return ret; +} + static int aspeed_ahash_do_request(struct crypto_engine *engine, void *areq) { struct ahash_request *req = ahash_request_cast(areq); @@ -434,7 +460,7 @@ static int aspeed_ahash_do_request(struct crypto_engine *engine, void *areq) ret = aspeed_ahash_req_update(hace_dev); if (ret != -EINPROGRESS) - return ret; + return aspeed_ahash_fallback(req); return 0; } |