crypto: drbg - remove unnecessary (void*) conversions

remove unnecessary void* type casting

v2:
Turn assignments less than 75 characters into one line.
Signed-off-by: Dong Chuanjian <chuanjian@nfschina.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/drbg.c

@@ -1703,7 +1703,7 @@ static int drbg_init_hash_kernel(struct drbg_state *drbg)
 
 static int drbg_fini_hash_kernel(struct drbg_state *drbg)
 {
-	struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
+	struct sdesc *sdesc = drbg->priv_data;
 	if (sdesc) {
 		crypto_free_shash(sdesc->shash.tfm);
 		kfree_sensitive(sdesc);
@@ -1715,7 +1715,7 @@ static int drbg_fini_hash_kernel(struct drbg_state *drbg)
 static void drbg_kcapi_hmacsetkey(struct drbg_state *drbg,
 				  const unsigned char *key)
 {
-	struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
+	struct sdesc *sdesc = drbg->priv_data;
 
 	crypto_shash_setkey(sdesc->shash.tfm, key, drbg_statelen(drbg));
 }
@@ -1723,7 +1723,7 @@ static void drbg_kcapi_hmacsetkey(struct drbg_state *drbg,
 static int drbg_kcapi_hash(struct drbg_state *drbg, unsigned char *outval,
 			   const struct list_head *in)
 {
-	struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
+	struct sdesc *sdesc = drbg->priv_data;
 	struct drbg_string *input = NULL;
 
 	crypto_shash_init(&sdesc->shash);
@@ -1818,8 +1818,7 @@ static int drbg_init_sym_kernel(struct drbg_state *drbg)
 static void drbg_kcapi_symsetkey(struct drbg_state *drbg,
 				 const unsigned char *key)
 {
-	struct crypto_cipher *tfm =
-		(struct crypto_cipher *)drbg->priv_data;
+	struct crypto_cipher *tfm = drbg->priv_data;
 
 	crypto_cipher_setkey(tfm, key, (drbg_keylen(drbg)));
 }
@@ -1827,8 +1826,7 @@ static void drbg_kcapi_symsetkey(struct drbg_state *drbg,
 static int drbg_kcapi_sym(struct drbg_state *drbg, unsigned char *outval,
 			  const struct drbg_string *in)
 {
-	struct crypto_cipher *tfm =
-		(struct crypto_cipher *)drbg->priv_data;
+	struct crypto_cipher *tfm = drbg->priv_data;
 
 	/* there is only component in *in */
 	BUG_ON(in->len < drbg_blocklen(drbg));