Commit 31bb2f0d authored by Iuliana Prodan's avatar Iuliana Prodan Committed by Herbert Xu

crypto: caam - check zero-length input

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: default avatarIuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: default avatarHoria Geanta <horia.geanta@nxp.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent fcd23ed5
......@@ -1884,6 +1884,9 @@ 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))
......@@ -1918,6 +1921,9 @@ 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))
......
......@@ -1445,6 +1445,9 @@ 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;
......
......@@ -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))
......
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