1 files changed, 11 insertions, 28 deletions

diff --git a/crypto/cmac.c b/crypto/cmac.c
index fce6b0f58e88..c7aa3665b076 100644
--- a/crypto/cmac.c
+++ b/crypto/cmac.c
@@ -28,7 +28,7 @@
  */
 struct cmac_tfm_ctx {
 	struct crypto_cipher *child;
-	u8 ctx[];
+	__be64 consts[];
 };
 
 /*
@@ -44,17 +44,15 @@ struct cmac_tfm_ctx {
  */
 struct cmac_desc_ctx {
 	unsigned int len;
-	u8 ctx[];
+	u8 odds[];
 };
 
 static int crypto_cmac_digest_setkey(struct crypto_shash *parent,
 				     const u8 *inkey, unsigned int keylen)
 {
-	unsigned long alignmask = crypto_shash_alignmask(parent);
 	struct cmac_tfm_ctx *ctx = crypto_shash_ctx(parent);
 	unsigned int bs = crypto_shash_blocksize(parent);
-	__be64 *consts = PTR_ALIGN((void *)ctx->ctx,
-				   (alignmask | (__alignof__(__be64) - 1)) + 1);
+	__be64 *consts = ctx->consts;
 	u64 _const[2];
 	int i, err = 0;
 	u8 msb_mask, gfmask;
@@ -104,10 +102,9 @@ static int crypto_cmac_digest_setkey(struct crypto_shash *parent,
 
 static int crypto_cmac_digest_init(struct shash_desc *pdesc)
 {
-	unsigned long alignmask = crypto_shash_alignmask(pdesc->tfm);
 	struct cmac_desc_ctx *ctx = shash_desc_ctx(pdesc);
 	int bs = crypto_shash_blocksize(pdesc->tfm);
-	u8 *prev = PTR_ALIGN((void *)ctx->ctx, alignmask + 1) + bs;
+	u8 *prev = &ctx->odds[bs];
 
 	ctx->len = 0;
 	memset(prev, 0, bs);
@@ -119,12 +116,11 @@ static int crypto_cmac_digest_update(struct shash_desc *pdesc, const u8 *p,
 				     unsigned int len)
 {
 	struct crypto_shash *parent = pdesc->tfm;
-	unsigned long alignmask = crypto_shash_alignmask(parent);
 	struct cmac_tfm_ctx *tctx = crypto_shash_ctx(parent);
 	struct cmac_desc_ctx *ctx = shash_desc_ctx(pdesc);
 	struct crypto_cipher *tfm = tctx->child;
 	int bs = crypto_shash_blocksize(parent);
-	u8 *odds = PTR_ALIGN((void *)ctx->ctx, alignmask + 1);
+	u8 *odds = ctx->odds;
 	u8 *prev = odds + bs;
 
 	/* checking the data can fill the block */
@@ -165,14 +161,11 @@ static int crypto_cmac_digest_update(struct shash_desc *pdesc, const u8 *p,
 static int crypto_cmac_digest_final(struct shash_desc *pdesc, u8 *out)
 {
 	struct crypto_shash *parent = pdesc->tfm;
-	unsigned long alignmask = crypto_shash_alignmask(parent);
 	struct cmac_tfm_ctx *tctx = crypto_shash_ctx(parent);
 	struct cmac_desc_ctx *ctx = shash_desc_ctx(pdesc);
 	struct crypto_cipher *tfm = tctx->child;
 	int bs = crypto_shash_blocksize(parent);
-	u8 *consts = PTR_ALIGN((void *)tctx->ctx,
-			       (alignmask | (__alignof__(__be64) - 1)) + 1);
-	u8 *odds = PTR_ALIGN((void *)ctx->ctx, alignmask + 1);
+	u8 *odds = ctx->odds;
 	u8 *prev = odds + bs;
 	unsigned int offset = 0;
 
@@ -191,7 +184,7 @@ static int crypto_cmac_digest_final(struct shash_desc *pdesc, u8 *out)
 	}
 
 	crypto_xor(prev, odds, bs);
-	crypto_xor(prev, consts + offset, bs);
+	crypto_xor(prev, (const u8 *)tctx->consts + offset, bs);
 
 	crypto_cipher_encrypt_one(tfm, out, prev);
 
@@ -241,7 +234,6 @@ static int cmac_create(struct crypto_template *tmpl, struct rtattr **tb)
 	struct shash_instance *inst;
 	struct crypto_cipher_spawn *spawn;
 	struct crypto_alg *alg;
-	unsigned long alignmask;
 	u32 mask;
 	int err;
 
@@ -273,23 +265,14 @@ static int cmac_create(struct crypto_template *tmpl, struct rtattr **tb)
 	if (err)
 		goto err_free_inst;
 
-	alignmask = alg->cra_alignmask;
-	inst->alg.base.cra_alignmask = alignmask;
 	inst->alg.base.cra_priority = alg->cra_priority;
 	inst->alg.base.cra_blocksize = alg->cra_blocksize;
+	inst->alg.base.cra_ctxsize = sizeof(struct cmac_tfm_ctx) +
+				     alg->cra_blocksize * 2;
 
 	inst->alg.digestsize = alg->cra_blocksize;
-	inst->alg.descsize =
-		ALIGN(sizeof(struct cmac_desc_ctx), crypto_tfm_ctx_alignment())
-		+ (alignmask & ~(crypto_tfm_ctx_alignment() - 1))
-		+ alg->cra_blocksize * 2;
-
-	inst->alg.base.cra_ctxsize =
-		ALIGN(sizeof(struct cmac_tfm_ctx), crypto_tfm_ctx_alignment())
-		+ ((alignmask | (__alignof__(__be64) - 1)) &
-		   ~(crypto_tfm_ctx_alignment() - 1))
-		+ alg->cra_blocksize * 2;
-
+	inst->alg.descsize = sizeof(struct cmac_desc_ctx) +
+			     alg->cra_blocksize * 2;
 	inst->alg.init = crypto_cmac_digest_init;
 	inst->alg.update = crypto_cmac_digest_update;
 	inst->alg.final = crypto_cmac_digest_final;