[PATCH 2/2] crypto: Remove unused async iterators

[ira . weiny]

From: Ira Weiny <ira.we...@intel.com>

Revert "crypto: hash - Add real ahash walk interface"
This reverts commit 75ecb231ff45b54afa9f4ec9137965c3c00868f4.

The callers of the functions in this commit were removed in ab8085c130ed

Remove these unused calls.

Fixes: ab8085c130ed ("crypto: x86 - remove SHA multibuffer routines and 
mcryptd")
Cc: Ard Biesheuvel <ard.biesheu...@linaro.org>
Signed-off-by: Ira Weiny <ira.we...@intel.com>
---
 crypto/ahash.c                 | 41 ++++------------------------------
 include/crypto/internal/hash.h | 13 -----------
 2 files changed, 4 insertions(+), 50 deletions(-)

diff --git a/crypto/ahash.c b/crypto/ahash.c
index 68a0f0cb75c4..9c23b606949e 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -10,7 +10,6 @@
 
 #include <crypto/internal/hash.h>
 #include <crypto/scatterwalk.h>
-#include <linux/bug.h>
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -46,10 +45,7 @@ static int hash_walk_next(struct crypto_hash_walk *walk)
        unsigned int nbytes = min(walk->entrylen,
                                  ((unsigned int)(PAGE_SIZE)) - offset);
 
-       if (walk->flags & CRYPTO_ALG_ASYNC)
-               walk->data = kmap(walk->pg);
-       else
-               walk->data = kmap_atomic(walk->pg);
+       walk->data = kmap_atomic(walk->pg);
        walk->data += offset;
 
        if (offset & alignmask) {
@@ -99,16 +95,8 @@ int crypto_hash_walk_done(struct crypto_hash_walk *walk, int 
err)
                }
        }
 
-       if (walk->flags & CRYPTO_ALG_ASYNC)
-               kunmap(walk->pg);
-       else {
-               kunmap_atomic(walk->data);
-               /*
-                * The may sleep test only makes sense for sync users.
-                * Async users don't need to sleep here anyway.
-                */
-               crypto_yield(walk->flags);
-       }
+       kunmap_atomic(walk->data);
+       crypto_yield(walk->flags);
 
        if (err)
                return err;
@@ -140,33 +128,12 @@ int crypto_hash_walk_first(struct ahash_request *req,
 
        walk->alignmask = crypto_ahash_alignmask(crypto_ahash_reqtfm(req));
        walk->sg = req->src;
-       walk->flags = req->base.flags & CRYPTO_TFM_REQ_MASK;
+       walk->flags = req->base.flags;
 
        return hash_walk_new_entry(walk);
 }
 EXPORT_SYMBOL_GPL(crypto_hash_walk_first);
 
-int crypto_ahash_walk_first(struct ahash_request *req,
-                           struct crypto_hash_walk *walk)
-{
-       walk->total = req->nbytes;
-
-       if (!walk->total) {
-               walk->entrylen = 0;
-               return 0;
-       }
-
-       walk->alignmask = crypto_ahash_alignmask(crypto_ahash_reqtfm(req));
-       walk->sg = req->src;
-       walk->flags = req->base.flags & CRYPTO_TFM_REQ_MASK;
-       walk->flags |= CRYPTO_ALG_ASYNC;
-
-       BUILD_BUG_ON(CRYPTO_TFM_REQ_MASK & CRYPTO_ALG_ASYNC);
-
-       return hash_walk_new_entry(walk);
-}
-EXPORT_SYMBOL_GPL(crypto_ahash_walk_first);
-
 static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
                                unsigned int keylen)
 {
diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
index 89f6f46ab2b8..6d3ad5ac4d28 100644
--- a/include/crypto/internal/hash.h
+++ b/include/crypto/internal/hash.h
@@ -62,25 +62,12 @@ struct crypto_shash_spawn {
 int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
 int crypto_hash_walk_first(struct ahash_request *req,
                           struct crypto_hash_walk *walk);
-int crypto_ahash_walk_first(struct ahash_request *req,
-                          struct crypto_hash_walk *walk);
-
-static inline int crypto_ahash_walk_done(struct crypto_hash_walk *walk,
-                                        int err)
-{
-       return crypto_hash_walk_done(walk, err);
-}
 
 static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
 {
        return !(walk->entrylen | walk->total);
 }
 
-static inline int crypto_ahash_walk_last(struct crypto_hash_walk *walk)
-{
-       return crypto_hash_walk_last(walk);
-}
-
 int crypto_register_ahash(struct ahash_alg *alg);
 void crypto_unregister_ahash(struct ahash_alg *alg);
 int crypto_register_ahashes(struct ahash_alg *algs, int count);
-- 
2.28.0.rc0.12.gb6a658bd00c9