From 434b421241f2d0faa7fea75f6320de00c5e3430e Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 18 Oct 2015 17:51:15 +0100 Subject: [PATCH] crypto: caam - avoid needlessly saving and restoring caam_hash_ctx When exporting and importing the hash state, we will only export and import into hashes which share the same struct crypto_ahash pointer. (See hash_accept->af_alg_accept->hash_accept_parent.) This means that saving the caam_hash_ctx structure on export, and restoring it on import is a waste of resources. So, remove this code. Signed-off-by: Russell King Signed-off-by: Herbert Xu --- drivers/crypto/caam/caamhash.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c index 1f58a791161e..cb7af558b176 100644 --- a/drivers/crypto/caam/caamhash.c +++ b/drivers/crypto/caam/caamhash.c @@ -1554,24 +1554,20 @@ static int ahash_final(struct ahash_request *req) static int ahash_export(struct ahash_request *req, void *out) { struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); - struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); struct caam_hash_state *state = ahash_request_ctx(req); - memcpy(out, ctx, sizeof(struct caam_hash_ctx)); - memcpy(out + sizeof(struct caam_hash_ctx), state, - sizeof(struct caam_hash_state)); + memcpy(out, state, sizeof(struct caam_hash_state)); + return 0; } static int ahash_import(struct ahash_request *req, const void *in) { struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); - struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash); struct caam_hash_state *state = ahash_request_ctx(req); - memcpy(ctx, in, sizeof(struct caam_hash_ctx)); - memcpy(state, in + sizeof(struct caam_hash_ctx), - sizeof(struct caam_hash_state)); + memcpy(state, in, sizeof(struct caam_hash_state)); + return 0; } -- 2.20.1