crypto: atmel - remove empty functions

Pointer members of an object with static storage duration, if not
explicitly initialized, will be initialized to a NULL pointer.
The crypto API checks if these pointers are not NULL before using them,
therefore we can safely remove these empty functions.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/atmel-aes.c

@@ -1265,10 +1265,6 @@ static int atmel_aes_ctr_cra_init(struct crypto_tfm *tfm)
 	return 0;
 }
 
-static void atmel_aes_cra_exit(struct crypto_tfm *tfm)
-{
-}
-
 static struct crypto_alg aes_algs[] = {
 {
 	.cra_name		= "ecb(aes)",
@@ -1281,7 +1277,6 @@ static struct crypto_alg aes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
@@ -1301,7 +1296,6 @@ static struct crypto_alg aes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
@@ -1322,7 +1316,6 @@ static struct crypto_alg aes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
@@ -1343,7 +1336,6 @@ static struct crypto_alg aes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
@@ -1364,7 +1356,6 @@ static struct crypto_alg aes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
@@ -1385,7 +1376,6 @@ static struct crypto_alg aes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
@@ -1406,7 +1396,6 @@ static struct crypto_alg aes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
@@ -1427,7 +1416,6 @@ static struct crypto_alg aes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_ctr_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
@@ -1450,7 +1438,6 @@ static struct crypto_alg aes_cfb64_alg = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= AES_MIN_KEY_SIZE,
 		.max_keysize	= AES_MAX_KEY_SIZE,
@@ -1838,18 +1825,12 @@ static int atmel_aes_gcm_init(struct crypto_aead *tfm)
 	return 0;
 }
 
-static void atmel_aes_gcm_exit(struct crypto_aead *tfm)
-{
-
-}
-
 static struct aead_alg aes_gcm_alg = {
 	.setkey		= atmel_aes_gcm_setkey,
 	.setauthsize	= atmel_aes_gcm_setauthsize,
 	.encrypt	= atmel_aes_gcm_encrypt,
 	.decrypt	= atmel_aes_gcm_decrypt,
 	.init		= atmel_aes_gcm_init,
-	.exit		= atmel_aes_gcm_exit,
 	.ivsize		= GCM_AES_IV_SIZE,
 	.maxauthsize	= AES_BLOCK_SIZE,
 
@@ -1985,7 +1966,6 @@ static struct crypto_alg aes_xts_alg = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_aes_xts_cra_init,
-	.cra_exit		= atmel_aes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= 2 * AES_MIN_KEY_SIZE,
 		.max_keysize	= 2 * AES_MAX_KEY_SIZE,

drivers/crypto/atmel-tdes.c

@@ -911,10 +911,6 @@ static int atmel_tdes_cra_init(struct crypto_tfm *tfm)
 	return 0;
 }
 
-static void atmel_tdes_cra_exit(struct crypto_tfm *tfm)
-{
-}
-
 static struct crypto_alg tdes_algs[] = {
 {
 	.cra_name		= "ecb(des)",
@@ -927,7 +923,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= DES_KEY_SIZE,
 		.max_keysize	= DES_KEY_SIZE,
@@ -947,7 +942,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= DES_KEY_SIZE,
 		.max_keysize	= DES_KEY_SIZE,
@@ -968,7 +962,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= DES_KEY_SIZE,
 		.max_keysize	= DES_KEY_SIZE,
@@ -989,7 +982,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= DES_KEY_SIZE,
 		.max_keysize	= DES_KEY_SIZE,
@@ -1010,7 +1002,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= DES_KEY_SIZE,
 		.max_keysize	= DES_KEY_SIZE,
@@ -1031,7 +1022,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= DES_KEY_SIZE,
 		.max_keysize	= DES_KEY_SIZE,
@@ -1052,7 +1042,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= DES_KEY_SIZE,
 		.max_keysize	= DES_KEY_SIZE,
@@ -1073,7 +1062,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= 2 * DES_KEY_SIZE,
 		.max_keysize	= 3 * DES_KEY_SIZE,
@@ -1093,7 +1081,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= 2*DES_KEY_SIZE,
 		.max_keysize	= 3*DES_KEY_SIZE,
@@ -1114,7 +1101,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= 2*DES_KEY_SIZE,
 		.max_keysize	= 2*DES_KEY_SIZE,
@@ -1135,7 +1121,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= 2*DES_KEY_SIZE,
 		.max_keysize	= 2*DES_KEY_SIZE,
@@ -1156,7 +1141,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= 2*DES_KEY_SIZE,
 		.max_keysize	= 2*DES_KEY_SIZE,
@@ -1177,7 +1161,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= 2*DES_KEY_SIZE,
 		.max_keysize	= 2*DES_KEY_SIZE,
@@ -1198,7 +1181,6 @@ static struct crypto_alg tdes_algs[] = {
 	.cra_type		= &crypto_ablkcipher_type,
 	.cra_module		= THIS_MODULE,
 	.cra_init		= atmel_tdes_cra_init,
-	.cra_exit		= atmel_tdes_cra_exit,
 	.cra_u.ablkcipher = {
 		.min_keysize	= 2*DES_KEY_SIZE,
 		.max_keysize	= 3*DES_KEY_SIZE,