From: Jan-Simon Möller Date: Thu, 4 Sep 2014 18:39:24 +0000 (+0200) Subject: crypto: LLVMLinux: Remove VLAIS from crypto/ccp/ccp-crypto-sha.c X-Git-Tag: v4.14-rc1~6646^2~9 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=61ded52438d5fdc4dea87f823c455f8ac1e426df;p=platform%2Fkernel%2Flinux-rpi.git crypto: LLVMLinux: Remove VLAIS from crypto/ccp/ccp-crypto-sha.c Replaced the use of a Variable Length Array In Struct (VLAIS) with a C99 compliant equivalent. This patch allocates the appropriate amount of memory using a char array using the SHASH_DESC_ON_STACK macro. The new code can be compiled with both gcc and clang. Signed-off-by: Jan-Simon Möller Signed-off-by: Behan Webster Reviewed-by: Mark Charlebois Acked-by: Herbert Xu --- diff --git a/drivers/crypto/ccp/ccp-crypto-sha.c b/drivers/crypto/ccp/ccp-crypto-sha.c index 873f234..9653157 100644 --- a/drivers/crypto/ccp/ccp-crypto-sha.c +++ b/drivers/crypto/ccp/ccp-crypto-sha.c @@ -198,10 +198,9 @@ static int ccp_sha_setkey(struct crypto_ahash *tfm, const u8 *key, { struct ccp_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); struct crypto_shash *shash = ctx->u.sha.hmac_tfm; - struct { - struct shash_desc sdesc; - char ctx[crypto_shash_descsize(shash)]; - } desc; + + SHASH_DESC_ON_STACK(sdesc, shash); + unsigned int block_size = crypto_shash_blocksize(shash); unsigned int digest_size = crypto_shash_digestsize(shash); int i, ret; @@ -216,11 +215,11 @@ static int ccp_sha_setkey(struct crypto_ahash *tfm, const u8 *key, if (key_len > block_size) { /* Must hash the input key */ - desc.sdesc.tfm = shash; - desc.sdesc.flags = crypto_ahash_get_flags(tfm) & + sdesc->tfm = shash; + sdesc->flags = crypto_ahash_get_flags(tfm) & CRYPTO_TFM_REQ_MAY_SLEEP; - ret = crypto_shash_digest(&desc.sdesc, key, key_len, + ret = crypto_shash_digest(sdesc, key, key_len, ctx->u.sha.key); if (ret) { crypto_ahash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);