Check zero-length input, for skcipher algorithm, to solve the extra tests. This is a valid operation, therefore the API will return no error. Signed-off-by: Iuliana Prodan <iuliana.prodan@xxxxxxx> --- drivers/crypto/caam/caamalg.c | 6 ++++++ drivers/crypto/caam/caamalg_qi.c | 3 +++ drivers/crypto/caam/caamalg_qi2.c | 5 +++++ 3 files changed, 14 insertions(+) diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 6b9937c..9a7bb06 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -1891,6 +1891,9 @@ static int skcipher_encrypt(struct skcipher_request *req) u32 *desc; int ret = 0; + if (!req->cryptlen) + return 0; + /* allocate extended descriptor */ edesc = skcipher_edesc_alloc(req, DESC_JOB_IO_LEN * CAAM_CMD_SZ); if (IS_ERR(edesc)) @@ -1925,6 +1928,9 @@ static int skcipher_decrypt(struct skcipher_request *req) u32 *desc; int ret = 0; + if (!req->cryptlen) + return 0; + /* allocate extended descriptor */ edesc = skcipher_edesc_alloc(req, DESC_JOB_IO_LEN * CAAM_CMD_SZ); if (IS_ERR(edesc)) diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c index 69cc657..b2dd4f3 100644 --- a/drivers/crypto/caam/caamalg_qi.c +++ b/drivers/crypto/caam/caamalg_qi.c @@ -1450,6 +1450,9 @@ static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt) struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher); int ret; + if (!req->cryptlen) + return 0; + if (unlikely(caam_congested)) return -EAGAIN; diff --git a/drivers/crypto/caam/caamalg_qi2.c b/drivers/crypto/caam/caamalg_qi2.c index da3452b..285e3c9 100644 --- a/drivers/crypto/caam/caamalg_qi2.c +++ b/drivers/crypto/caam/caamalg_qi2.c @@ -1499,6 +1499,9 @@ static int skcipher_encrypt(struct skcipher_request *req) struct caam_request *caam_req = skcipher_request_ctx(req); int ret; + if (!req->cryptlen) + return 0; + /* allocate extended descriptor */ edesc = skcipher_edesc_alloc(req); if (IS_ERR(edesc)) @@ -1527,6 +1530,8 @@ static int skcipher_decrypt(struct skcipher_request *req) struct caam_request *caam_req = skcipher_request_ctx(req); int ret; + if (!req->cryptlen) + return 0; /* allocate extended descriptor */ edesc = skcipher_edesc_alloc(req); if (IS_ERR(edesc)) -- 2.1.0
