Staging: skein: skein_api: Remove useless type conversion

Some type conversions like casting a pointer to a pointer of same type,
casting to the original type using addressof(&) operator etc. are not
needed. Therefore, remove them. Done using coccinelle:

@@
type t;
t *p;
t a;
@@
(
- (t)(a)
+ a
|
- (t *)(p)
+ p
|
- (t *)(&a)
+ &a
)

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/skein/skein_api.c b/drivers/staging/skein/skein_api.c
index cab26e7..c6526b6 100644 (file)
--- a/drivers/staging/skein/skein_api.c
+++ b/drivers/staging/skein/skein_api.c
@@ -98,19 +98,16 @@ int skein_mac_init(struct skein_ctx *ctx, const u8 *key, size_t key_len,
        switch (ctx->skein_size) {
        case SKEIN_256:
                ret = skein_256_init_ext(&ctx->m.s256, hash_bit_len,
-                                        tree_info,
-                                        (const u8 *)key, key_len);
+                                        tree_info, key, key_len);
 
                break;
        case SKEIN_512:
                ret = skein_512_init_ext(&ctx->m.s512, hash_bit_len,
-                                        tree_info,
-                                        (const u8 *)key, key_len);
+                                        tree_info, key, key_len);
                break;
        case SKEIN_1024:
                ret = skein_1024_init_ext(&ctx->m.s1024, hash_bit_len,
-                                         tree_info,
-                                         (const u8 *)key, key_len);
+                                         tree_info, key, key_len);
 
                break;
        }
@@ -152,16 +149,13 @@ int skein_update(struct skein_ctx *ctx, const u8 *msg,
 
        switch (ctx->skein_size) {
        case SKEIN_256:
-               ret = skein_256_update(&ctx->m.s256, (const u8 *)msg,
-                                      msg_byte_cnt);
+               ret = skein_256_update(&ctx->m.s256, msg, msg_byte_cnt);
                break;
        case SKEIN_512:
-               ret = skein_512_update(&ctx->m.s512, (const u8 *)msg,
-                                      msg_byte_cnt);
+               ret = skein_512_update(&ctx->m.s512, msg, msg_byte_cnt);
                break;
        case SKEIN_1024:
-               ret = skein_1024_update(&ctx->m.s1024, (const u8 *)msg,
-                                       msg_byte_cnt);
+               ret = skein_1024_update(&ctx->m.s1024, msg, msg_byte_cnt);
                break;
        }
        return ret;
@@ -211,7 +205,7 @@ int skein_update_bits(struct skein_ctx *ctx, const u8 *msg,
        /* partial byte bit mask */
        mask = (u8)(1u << (7 - (msg_bit_cnt & 7)));
        /* apply bit padding on final byte (in the buffer) */
-       up[length - 1]  = (u8)((up[length - 1] & (0 - mask)) | mask);
+       up[length - 1]  = (up[length - 1] & (0 - mask)) | mask;
 
        return SKEIN_SUCCESS;
 }
@@ -224,13 +218,13 @@ int skein_final(struct skein_ctx *ctx, u8 *hash)
 
        switch (ctx->skein_size) {
        case SKEIN_256:
-               ret = skein_256_final(&ctx->m.s256, (u8 *)hash);
+               ret = skein_256_final(&ctx->m.s256, hash);
                break;
        case SKEIN_512:
-               ret = skein_512_final(&ctx->m.s512, (u8 *)hash);
+               ret = skein_512_final(&ctx->m.s512, hash);
                break;
        case SKEIN_1024:
-               ret = skein_1024_final(&ctx->m.s1024, (u8 *)hash);
+               ret = skein_1024_final(&ctx->m.s1024, hash);
                break;
        }
        return ret;