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authorChristian Lamparter <chunkeey@gmail.com>2018-04-19 19:41:53 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2018-04-28 11:09:41 +0300
commitc4e90650ff0cbf123ec9cfc32026fa0fb2931658 (patch)
treed0599caa47a2918b45697297667eb283cc914c86 /drivers/crypto
parentce05ffe10457bda487fa049016a6ba79934bdece (diff)
downloadlinux-c4e90650ff0cbf123ec9cfc32026fa0fb2931658.tar.xz
crypto: crypto4xx - avoid VLA use
This patch fixes some of the -Wvla warnings. crypto4xx_alg.c:83:19: warning: Variable length array is used. crypto4xx_alg.c:273:56: warning: Variable length array is used. crypto4xx_alg.c:380:32: warning: Variable length array is used. Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/amcc/crypto4xx_alg.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_alg.c b/drivers/crypto/amcc/crypto4xx_alg.c
index 2a8e4f0fe1e9..2dfeb71deca9 100644
--- a/drivers/crypto/amcc/crypto4xx_alg.c
+++ b/drivers/crypto/amcc/crypto4xx_alg.c
@@ -80,7 +80,7 @@ static inline int crypto4xx_crypt(struct skcipher_request *req,
{
struct crypto_skcipher *cipher = crypto_skcipher_reqtfm(req);
struct crypto4xx_ctx *ctx = crypto_skcipher_ctx(cipher);
- __le32 iv[ivlen];
+ __le32 iv[AES_IV_SIZE];
if (ivlen)
crypto4xx_memcpy_to_le32(iv, req->iv, ivlen);
@@ -270,13 +270,7 @@ static inline bool crypto4xx_aead_need_fallback(struct aead_request *req,
static int crypto4xx_aead_fallback(struct aead_request *req,
struct crypto4xx_ctx *ctx, bool do_decrypt)
{
- char aead_req_data[sizeof(struct aead_request) +
- crypto_aead_reqsize(ctx->sw_cipher.aead)]
- __aligned(__alignof__(struct aead_request));
-
- struct aead_request *subreq = (void *) aead_req_data;
-
- memset(subreq, 0, sizeof(aead_req_data));
+ struct aead_request *subreq = aead_request_ctx(req);
aead_request_set_tfm(subreq, ctx->sw_cipher.aead);
aead_request_set_callback(subreq, req->base.flags,
@@ -377,7 +371,7 @@ static int crypto4xx_crypt_aes_ccm(struct aead_request *req, bool decrypt)
struct crypto_aead *aead = crypto_aead_reqtfm(req);
unsigned int len = req->cryptlen;
__le32 iv[16];
- u32 tmp_sa[ctx->sa_len * 4];
+ u32 tmp_sa[SA_AES128_CCM_LEN + 4];
struct dynamic_sa_ctl *sa = (struct dynamic_sa_ctl *)tmp_sa;
if (crypto4xx_aead_need_fallback(req, true, decrypt))
@@ -386,7 +380,7 @@ static int crypto4xx_crypt_aes_ccm(struct aead_request *req, bool decrypt)
if (decrypt)
len -= crypto_aead_authsize(aead);
- memcpy(tmp_sa, decrypt ? ctx->sa_in : ctx->sa_out, sizeof(tmp_sa));
+ memcpy(tmp_sa, decrypt ? ctx->sa_in : ctx->sa_out, ctx->sa_len * 4);
sa->sa_command_0.bf.digest_len = crypto_aead_authsize(aead) >> 2;
if (req->iv[0] == 1) {