[CRYPTO] api: Remove deprecated interface

This patch removes the old cipher interface and related code.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

6 files changed, 16 insertions, 532 deletions

diff --git a/crypto/algapi.c b/crypto/algapi.c
index c91530021e9c..69eb504721a4 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -396,7 +396,7 @@ struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn)
                 return ERR_PTR(-EAGAIN);
         }
 
-        tfm = __crypto_alloc_tfm(alg, 0);
+        tfm = __crypto_alloc_tfm(alg);
         if (IS_ERR(tfm))
                 crypto_mod_put(alg);
 
diff --git a/crypto/api.c b/crypto/api.c
index 8c446871cd5b..8b80baec853a 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -212,25 +212,6 @@ struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask)
 }
 EXPORT_SYMBOL_GPL(crypto_alg_mod_lookup);
 
-static int crypto_init_flags(struct crypto_tfm *tfm, u32 flags)
-{
-        tfm->crt_flags = flags & CRYPTO_TFM_REQ_MASK;
-        flags &= ~CRYPTO_TFM_REQ_MASK;
-        
-        switch (crypto_tfm_alg_type(tfm)) {
-        case CRYPTO_ALG_TYPE_CIPHER:
-                return crypto_init_cipher_flags(tfm, flags);
-                
-        case CRYPTO_ALG_TYPE_DIGEST:
-                return crypto_init_digest_flags(tfm, flags);
-                
-        case CRYPTO_ALG_TYPE_COMPRESS:
-                return crypto_init_compress_flags(tfm, flags);
-        }
-        
-        return 0;
-}
-
 static int crypto_init_ops(struct crypto_tfm *tfm)
 {
         const struct crypto_type *type = tfm->__crt_alg->cra_type;
@@ -285,7 +266,7 @@ static void crypto_exit_ops(struct crypto_tfm *tfm)
         }
 }
 
-static unsigned int crypto_ctxsize(struct crypto_alg *alg, int flags)
+static unsigned int crypto_ctxsize(struct crypto_alg *alg)
 {
         const struct crypto_type *type = alg->cra_type;
         unsigned int len;
@@ -299,15 +280,15 @@ static unsigned int crypto_ctxsize(struct crypto_alg *alg, int flags)
                 BUG();
 
         case CRYPTO_ALG_TYPE_CIPHER:
-                len += crypto_cipher_ctxsize(alg, flags);
+                len += crypto_cipher_ctxsize(alg);
                 break;
                 
         case CRYPTO_ALG_TYPE_DIGEST:
-                len += crypto_digest_ctxsize(alg, flags);
+                len += crypto_digest_ctxsize(alg);
                 break;
                 
         case CRYPTO_ALG_TYPE_COMPRESS:
-                len += crypto_compress_ctxsize(alg, flags);
+                len += crypto_compress_ctxsize(alg);
                 break;
         }
 
@@ -322,23 +303,19 @@ void crypto_shoot_alg(struct crypto_alg *alg)
 }
 EXPORT_SYMBOL_GPL(crypto_shoot_alg);
 
-struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 flags)
+struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg)
 {
         struct crypto_tfm *tfm = NULL;
         unsigned int tfm_size;
         int err = -ENOMEM;
 
-        tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, flags);
+        tfm_size = sizeof(*tfm) + crypto_ctxsize(alg);
         tfm = kzalloc(tfm_size, GFP_KERNEL);
         if (tfm == NULL)
                 goto out_err;
 
         tfm->__crt_alg = alg;
 
-        err = crypto_init_flags(tfm, flags);
-        if (err)
-                goto out_free_tfm;
-                
         err = crypto_init_ops(tfm);
         if (err)
                 goto out_free_tfm;
@@ -362,31 +339,6 @@ out:
 }
 EXPORT_SYMBOL_GPL(__crypto_alloc_tfm);
 
-struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
-{
-        struct crypto_tfm *tfm = NULL;
-        int err;
-
-        do {
-                struct crypto_alg *alg;
-
-                alg = crypto_alg_mod_lookup(name, 0, CRYPTO_ALG_ASYNC);
-                err = PTR_ERR(alg);
-                if (IS_ERR(alg))
-                        continue;
-
-                tfm = __crypto_alloc_tfm(alg, flags);
-                err = 0;
-                if (IS_ERR(tfm)) {
-                        crypto_mod_put(alg);
-                        err = PTR_ERR(tfm);
-                        tfm = NULL;
-                }
-        } while (err == -EAGAIN && !signal_pending(current));
-
-        return tfm;
-}
-
 /*
  *      crypto_alloc_base - Locate algorithm and allocate transform
  *      @alg_name: Name of algorithm
@@ -420,7 +372,7 @@ struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask)
                         goto err;
                 }
 
-                tfm = __crypto_alloc_tfm(alg, 0);
+                tfm = __crypto_alloc_tfm(alg);
                 if (!IS_ERR(tfm))
                         return tfm;
 
@@ -466,7 +418,6 @@ void crypto_free_tfm(struct crypto_tfm *tfm)
         kfree(tfm);
 }
 
-EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
 EXPORT_SYMBOL_GPL(crypto_free_tfm);
 
 int crypto_has_alg(const char *name, u32 type, u32 mask)
diff --git a/crypto/cipher.c b/crypto/cipher.c
index 9e03701cfdcc..333aab2f0277 100644
--- a/crypto/cipher.c
+++ b/crypto/cipher.c
@@ -12,274 +12,13 @@
  * any later version.
  *
  */
-#include <linux/compiler.h>
+
 #include <linux/kernel.h>
 #include <linux/crypto.h>
 #include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
+#include <linux/scatterlist.h>
 #include <linux/string.h>
-#include <asm/scatterlist.h>
 #include "internal.h"
-#include "scatterwalk.h"
-
-struct cipher_alg_compat {
-        unsigned int cia_min_keysize;
-        unsigned int cia_max_keysize;
-        int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
-                          unsigned int keylen);
-        void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
-        void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
-
-        unsigned int (*cia_encrypt_ecb)(const struct cipher_desc *desc,
-                                        u8 *dst, const u8 *src,
-                                        unsigned int nbytes);
-        unsigned int (*cia_decrypt_ecb)(const struct cipher_desc *desc,
-                                        u8 *dst, const u8 *src,
-                                        unsigned int nbytes);
-        unsigned int (*cia_encrypt_cbc)(const struct cipher_desc *desc,
-                                        u8 *dst, const u8 *src,
-                                        unsigned int nbytes);
-        unsigned int (*cia_decrypt_cbc)(const struct cipher_desc *desc,
-                                        u8 *dst, const u8 *src,
-                                        unsigned int nbytes);
-};
-
-static inline void xor_64(u8 *a, const u8 *b)
-{
-        ((u32 *)a)[0] ^= ((u32 *)b)[0];
-        ((u32 *)a)[1] ^= ((u32 *)b)[1];
-}
-
-static inline void xor_128(u8 *a, const u8 *b)
-{
-        ((u32 *)a)[0] ^= ((u32 *)b)[0];
-        ((u32 *)a)[1] ^= ((u32 *)b)[1];
-        ((u32 *)a)[2] ^= ((u32 *)b)[2];
-        ((u32 *)a)[3] ^= ((u32 *)b)[3];
-}
-
-static unsigned int crypt_slow(const struct cipher_desc *desc,
-                               struct scatter_walk *in,
-                               struct scatter_walk *out, unsigned int bsize)
-{
-        unsigned long alignmask = crypto_tfm_alg_alignmask(desc->tfm);
-        u8 buffer[bsize * 2 + alignmask];
-        u8 *src = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
-        u8 *dst = src + bsize;
-
-        scatterwalk_copychunks(src, in, bsize, 0);
-        desc->prfn(desc, dst, src, bsize);
-        scatterwalk_copychunks(dst, out, bsize, 1);
-
-        return bsize;
-}
-
-static inline unsigned int crypt_fast(const struct cipher_desc *desc,
-                                      struct scatter_walk *in,
-                                      struct scatter_walk *out,
-                                      unsigned int nbytes, u8 *tmp)
-{
-        u8 *src, *dst;
-        u8 *real_src, *real_dst;
-
-        real_src = scatterwalk_map(in, 0);
-        real_dst = scatterwalk_map(out, 1);
-
-        src = real_src;
-        dst = scatterwalk_samebuf(in, out) ? src : real_dst;
-
-        if (tmp) {
-                memcpy(tmp, src, nbytes);
-                src = tmp;
-                dst = tmp;
-        }
-
-        nbytes = desc->prfn(desc, dst, src, nbytes);
-
-        if (tmp)
-                memcpy(real_dst, tmp, nbytes);
-
-        scatterwalk_unmap(real_src, 0);
-        scatterwalk_unmap(real_dst, 1);
-
-        scatterwalk_advance(in, nbytes);
-        scatterwalk_advance(out, nbytes);
-
-        return nbytes;
-}
-
-/* 
- * Generic encrypt/decrypt wrapper for ciphers, handles operations across
- * multiple page boundaries by using temporary blocks.  In user context,
- * the kernel is given a chance to schedule us once per page.
- */
-static int crypt(const struct cipher_desc *desc,
-                 struct scatterlist *dst,
-                 struct scatterlist *src,
-                 unsigned int nbytes)
-{
-        struct scatter_walk walk_in, walk_out;
-        struct crypto_tfm *tfm = desc->tfm;
-        const unsigned int bsize = crypto_tfm_alg_blocksize(tfm);
-        unsigned int alignmask = crypto_tfm_alg_alignmask(tfm);
-        unsigned long buffer = 0;
-
-        if (!nbytes)
-                return 0;
-
-        if (nbytes % bsize) {
-                tfm->crt_flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;
-                return -EINVAL;
-        }
-
-        scatterwalk_start(&walk_in, src);
-        scatterwalk_start(&walk_out, dst);
-
-        for(;;) {
-                unsigned int n = nbytes;
-                u8 *tmp = NULL;
-
-                if (!scatterwalk_aligned(&walk_in, alignmask) ||
-                    !scatterwalk_aligned(&walk_out, alignmask)) {
-                        if (!buffer) {
-                                buffer = __get_free_page(GFP_ATOMIC);
-                                if (!buffer)
-                                        n = 0;
-                        }
-                        tmp = (u8 *)buffer;
-                }
-
-                n = scatterwalk_clamp(&walk_in, n);
-                n = scatterwalk_clamp(&walk_out, n);
-
-                if (likely(n >= bsize))
-                        n = crypt_fast(desc, &walk_in, &walk_out, n, tmp);
-                else
-                        n = crypt_slow(desc, &walk_in, &walk_out, bsize);
-
-                nbytes -= n;
-
-                scatterwalk_done(&walk_in, 0, nbytes);
-                scatterwalk_done(&walk_out, 1, nbytes);
-
-                if (!nbytes)
-                        break;
-
-                crypto_yield(tfm->crt_flags);
-        }
-
-        if (buffer)
-                free_page(buffer);
-
-        return 0;
-}
-
-static int crypt_iv_unaligned(struct cipher_desc *desc,
-                              struct scatterlist *dst,
-                              struct scatterlist *src,
-                              unsigned int nbytes)
-{
-        struct crypto_tfm *tfm = desc->tfm;
-        unsigned long alignmask = crypto_tfm_alg_alignmask(tfm);
-        u8 *iv = desc->info;
-
-        if (unlikely(((unsigned long)iv & alignmask))) {
-                unsigned int ivsize = tfm->crt_cipher.cit_ivsize;
-                u8 buffer[ivsize + alignmask];
-                u8 *tmp = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
-                int err;
-
-                desc->info = memcpy(tmp, iv, ivsize);
-                err = crypt(desc, dst, src, nbytes);
-                memcpy(iv, tmp, ivsize);
-
-                return err;
-        }
-
-        return crypt(desc, dst, src, nbytes);
-}
-
-static unsigned int cbc_process_encrypt(const struct cipher_desc *desc,
-                                        u8 *dst, const u8 *src,
-                                        unsigned int nbytes)
-{
-        struct crypto_tfm *tfm = desc->tfm;
-        void (*xor)(u8 *, const u8 *) = tfm->crt_u.cipher.cit_xor_block;
-        int bsize = crypto_tfm_alg_blocksize(tfm);
-
-        void (*fn)(struct crypto_tfm *, u8 *, const u8 *) = desc->crfn;
-        u8 *iv = desc->info;
-        unsigned int done = 0;
-
-        nbytes -= bsize;
-
-        do {
-                xor(iv, src);
-                fn(tfm, dst, iv);
-                memcpy(iv, dst, bsize);
-
-                src += bsize;
-                dst += bsize;
-        } while ((done += bsize) <= nbytes);
-
-        return done;
-}
-
-static unsigned int cbc_process_decrypt(const struct cipher_desc *desc,
-                                        u8 *dst, const u8 *src,
-                                        unsigned int nbytes)
-{
-        struct crypto_tfm *tfm = desc->tfm;
-        void (*xor)(u8 *, const u8 *) = tfm->crt_u.cipher.cit_xor_block;
-        int bsize = crypto_tfm_alg_blocksize(tfm);
-        unsigned long alignmask = crypto_tfm_alg_alignmask(desc->tfm);
-
-        u8 stack[src == dst ? bsize + alignmask : 0];
-        u8 *buf = (u8 *)ALIGN((unsigned long)stack, alignmask + 1);
-        u8 **dst_p = src == dst ? &buf : &dst;
-
-        void (*fn)(struct crypto_tfm *, u8 *, const u8 *) = desc->crfn;
-        u8 *iv = desc->info;
-        unsigned int done = 0;
-
-        nbytes -= bsize;
-
-        do {
-                u8 *tmp_dst = *dst_p;
-
-                fn(tfm, tmp_dst, src);
-                xor(tmp_dst, iv);
-                memcpy(iv, src, bsize);
-                if (tmp_dst != dst)
-                        memcpy(dst, tmp_dst, bsize);
-
-                src += bsize;
-                dst += bsize;
-        } while ((done += bsize) <= nbytes);
-
-        return done;
-}
-
-static unsigned int ecb_process(const struct cipher_desc *desc, u8 *dst,
-                                const u8 *src, unsigned int nbytes)
-{
-        struct crypto_tfm *tfm = desc->tfm;
-        int bsize = crypto_tfm_alg_blocksize(tfm);
-        void (*fn)(struct crypto_tfm *, u8 *, const u8 *) = desc->crfn;
-        unsigned int done = 0;
-
-        nbytes -= bsize;
-
-        do {
-                fn(tfm, dst, src);
-
-                src += bsize;
-                dst += bsize;
-        } while ((done += bsize) <= nbytes);
-
-        return done;
-}
 
 static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
 {
@@ -293,122 +32,6 @@ static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
                 return cia->cia_setkey(tfm, key, keylen);
 }
 
-static int ecb_encrypt(struct crypto_tfm *tfm,
-                       struct scatterlist *dst,
-                       struct scatterlist *src, unsigned int nbytes)
-{
-        struct cipher_desc desc;
-        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
-
-        desc.tfm = tfm;
-        desc.crfn = cipher->cia_encrypt;
-        desc.prfn = cipher->cia_encrypt_ecb ?: ecb_process;
-
-        return crypt(&desc, dst, src, nbytes);
-}
-
-static int ecb_decrypt(struct crypto_tfm *tfm,
-                       struct scatterlist *dst,
-                       struct scatterlist *src,
-                       unsigned int nbytes)
-{
-        struct cipher_desc desc;
-        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
-
-        desc.tfm = tfm;
-        desc.crfn = cipher->cia_decrypt;
-        desc.prfn = cipher->cia_decrypt_ecb ?: ecb_process;
-
-        return crypt(&desc, dst, src, nbytes);
-}
-
-static int cbc_encrypt(struct crypto_tfm *tfm,
-                       struct scatterlist *dst,
-                       struct scatterlist *src,
-                       unsigned int nbytes)
-{
-        struct cipher_desc desc;
-        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
-
-        desc.tfm = tfm;
-        desc.crfn = cipher->cia_encrypt;
-        desc.prfn = cipher->cia_encrypt_cbc ?: cbc_process_encrypt;
-        desc.info = tfm->crt_cipher.cit_iv;
-
-        return crypt(&desc, dst, src, nbytes);
-}
-
-static int cbc_encrypt_iv(struct crypto_tfm *tfm,
-                          struct scatterlist *dst,
-                          struct scatterlist *src,
-                          unsigned int nbytes, u8 *iv)
-{
-        struct cipher_desc desc;
-        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
-
-        desc.tfm = tfm;
-        desc.crfn = cipher->cia_encrypt;
-        desc.prfn = cipher->cia_encrypt_cbc ?: cbc_process_encrypt;
-        desc.info = iv;
-
-        return crypt_iv_unaligned(&desc, dst, src, nbytes);
-}
-
-static int cbc_decrypt(struct crypto_tfm *tfm,
-                       struct scatterlist *dst,
-                       struct scatterlist *src,
-                       unsigned int nbytes)
-{
-        struct cipher_desc desc;
-        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
-
-        desc.tfm = tfm;
-        desc.crfn = cipher->cia_decrypt;
-        desc.prfn = cipher->cia_decrypt_cbc ?: cbc_process_decrypt;
-        desc.info = tfm->crt_cipher.cit_iv;
-
-        return crypt(&desc, dst, src, nbytes);
-}
-
-static int cbc_decrypt_iv(struct crypto_tfm *tfm,
-                          struct scatterlist *dst,
-                          struct scatterlist *src,
-                          unsigned int nbytes, u8 *iv)
-{
-        struct cipher_desc desc;
-        struct cipher_alg_compat *cipher = (void *)&tfm->__crt_alg->cra_cipher;
-
-        desc.tfm = tfm;
-        desc.crfn = cipher->cia_decrypt;
-        desc.prfn = cipher->cia_decrypt_cbc ?: cbc_process_decrypt;
-        desc.info = iv;
-
-        return crypt_iv_unaligned(&desc, dst, src, nbytes);
-}
-
-static int nocrypt(struct crypto_tfm *tfm,
-                   struct scatterlist *dst,
-                   struct scatterlist *src,
-                   unsigned int nbytes)
-{
-        return -ENOSYS;
-}
-
-static int nocrypt_iv(struct crypto_tfm *tfm,
-                      struct scatterlist *dst,
-                      struct scatterlist *src,
-                      unsigned int nbytes, u8 *iv)
-{
-        return -ENOSYS;
-}
-
-int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags)
-{
-        u32 mode = flags & CRYPTO_TFM_MODE_MASK;
-        tfm->crt_cipher.cit_mode = mode ? mode : CRYPTO_TFM_MODE_ECB;
-        return 0;
-}
-
 static void cipher_crypt_unaligned(void (*fn)(struct crypto_tfm *, u8 *,
                                               const u8 *),
                                    struct crypto_tfm *tfm,
@@ -454,7 +77,6 @@ static void cipher_decrypt_unaligned(struct crypto_tfm *tfm,
 
 int crypto_init_cipher_ops(struct crypto_tfm *tfm)
 {
-        int ret = 0;
         struct cipher_tfm *ops = &tfm->crt_cipher;
         struct cipher_alg *cipher = &tfm->__crt_alg->cra_cipher;
 
@@ -464,70 +86,7 @@ int crypto_init_cipher_ops(struct crypto_tfm *tfm)
         ops->cit_decrypt_one = crypto_tfm_alg_alignmask(tfm) ?
                 cipher_decrypt_unaligned : cipher->cia_decrypt;
 
-        switch (tfm->crt_cipher.cit_mode) {
-        case CRYPTO_TFM_MODE_ECB:
-                ops->cit_encrypt = ecb_encrypt;
-                ops->cit_decrypt = ecb_decrypt;
-                ops->cit_encrypt_iv = nocrypt_iv;
-                ops->cit_decrypt_iv = nocrypt_iv;
-                break;
-                
-        case CRYPTO_TFM_MODE_CBC:
-                ops->cit_encrypt = cbc_encrypt;
-                ops->cit_decrypt = cbc_decrypt;
-                ops->cit_encrypt_iv = cbc_encrypt_iv;
-                ops->cit_decrypt_iv = cbc_decrypt_iv;
-                break;
-                
-        case CRYPTO_TFM_MODE_CFB:
-                ops->cit_encrypt = nocrypt;
-                ops->cit_decrypt = nocrypt;
-                ops->cit_encrypt_iv = nocrypt_iv;
-                ops->cit_decrypt_iv = nocrypt_iv;
-                break;
-        
-        case CRYPTO_TFM_MODE_CTR:
-                ops->cit_encrypt = nocrypt;
-                ops->cit_decrypt = nocrypt;
-                ops->cit_encrypt_iv = nocrypt_iv;
-                ops->cit_decrypt_iv = nocrypt_iv;
-                break;
-
-        default:
-                BUG();
-        }
-        
-        if (ops->cit_mode == CRYPTO_TFM_MODE_CBC) {
-                unsigned long align;
-                unsigned long addr;
-                
-                switch (crypto_tfm_alg_blocksize(tfm)) {
-                case 8:
-                        ops->cit_xor_block = xor_64;
-                        break;
-                        
-                case 16:
-                        ops->cit_xor_block = xor_128;
-                        break;
-                        
-                default:
-                        printk(KERN_WARNING "%s: block size %u not supported\n",
-                               crypto_tfm_alg_name(tfm),
-                               crypto_tfm_alg_blocksize(tfm));
-                        ret = -EINVAL;
-                        goto out;
-                }
-                
-                ops->cit_ivsize = crypto_tfm_alg_blocksize(tfm);
-                align = crypto_tfm_alg_alignmask(tfm) + 1;
-                addr = (unsigned long)crypto_tfm_ctx(tfm);
-                addr = ALIGN(addr, align);
-                addr += ALIGN(tfm->__crt_alg->cra_ctxsize, align);
-                ops->cit_iv = (void *)addr;
-        }
-
-out:    
-        return ret;
+        return 0;
 }
 
 void crypto_exit_cipher_ops(struct crypto_tfm *tfm)
diff --git a/crypto/compress.c b/crypto/compress.c
index eca182aa3380..0a6570048c1e 100644
--- a/crypto/compress.c
+++ b/crypto/compress.c
@@ -34,11 +34,6 @@ static int crypto_decompress(struct crypto_tfm *tfm,
                                                            dlen);
 }
 
-int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags)
-{
-        return flags ? -EINVAL : 0;
-}
-
 int crypto_init_compress_ops(struct crypto_tfm *tfm)
 {
         struct compress_tfm *ops = &tfm->crt_compress;
diff --git a/crypto/digest.c b/crypto/digest.c
index bc47af648cb1..1bf7414aeb9e 100644
--- a/crypto/digest.c
+++ b/crypto/digest.c
@@ -136,11 +136,6 @@ static int digest(struct hash_desc *desc,
         return final(desc, out);
 }
 
-int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags)
-{
-        return flags ? -EINVAL : 0;
-}
-
 int crypto_init_digest_ops(struct crypto_tfm *tfm)
 {
         struct hash_tfm *ops = &tfm->crt_hash;
diff --git a/crypto/internal.h b/crypto/internal.h
index 2da6ad4f3593..784a7745315f 100644
--- a/crypto/internal.h
+++ b/crypto/internal.h
@@ -83,8 +83,7 @@ static inline void crypto_exit_proc(void)
 { }
 #endif
 
-static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg,
-                                                 int flags)
+static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg)
 {
         unsigned int len = alg->cra_ctxsize;
 
@@ -96,23 +95,12 @@ static inline unsigned int crypto_digest_ctxsize(struct crypto_alg *alg,
         return len;
 }
 
-static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg,
-                                                 int flags)
+static inline unsigned int crypto_cipher_ctxsize(struct crypto_alg *alg)
 {
-        unsigned int len = alg->cra_ctxsize;
-        
-        switch (flags & CRYPTO_TFM_MODE_MASK) {
-        case CRYPTO_TFM_MODE_CBC:
-                len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
-                len += alg->cra_blocksize;
-                break;
-        }
-
-        return len;
+        return alg->cra_ctxsize;
 }
 
-static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg,
-                                                   int flags)
+static inline unsigned int crypto_compress_ctxsize(struct crypto_alg *alg)
 {
         return alg->cra_ctxsize;
 }
@@ -121,10 +109,6 @@ struct crypto_alg *crypto_mod_get(struct crypto_alg *alg);
 struct crypto_alg *__crypto_alg_lookup(const char *name, u32 type, u32 mask);
 struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask);
 
-int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags);
-int crypto_init_cipher_flags(struct crypto_tfm *tfm, u32 flags);
-int crypto_init_compress_flags(struct crypto_tfm *tfm, u32 flags);
-
 int crypto_init_digest_ops(struct crypto_tfm *tfm);
 int crypto_init_cipher_ops(struct crypto_tfm *tfm);
 int crypto_init_compress_ops(struct crypto_tfm *tfm);
@@ -136,7 +120,7 @@ void crypto_exit_compress_ops(struct crypto_tfm *tfm);
 void crypto_larval_error(const char *name, u32 type, u32 mask);
 
 void crypto_shoot_alg(struct crypto_alg *alg);
-struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 flags);
+struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg);
 
 int crypto_register_instance(struct crypto_template *tmpl,
                              struct crypto_instance *inst);