crypto: rockchip - switch to skcipher API

Commit 7a7ffe65 ("crypto: skcipher - Add top-level skcipher interface")
dated 20 august 2015 introduced the new skcipher API which is supposed to
replace both blkcipher and ablkcipher. While all consumers of the API have
been converted long ago, some producers of the ablkcipher remain, forcing
us to keep the ablkcipher support routines alive, along with the matching
code to expose [a]blkciphers via the skcipher API.

So switch this driver to the skcipher API, allowing us to finally drop the
ablkcipher code in the near future.

Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/rockchip/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_CRYPTO_DEV_ROCKCHIP) += rk_crypto.o
 rk_crypto-objs := rk3288_crypto.o \
-		  rk3288_crypto_ablkcipher.o \
+		  rk3288_crypto_skcipher.o \
 		  rk3288_crypto_ahash.o

drivers/crypto/rockchip/rk3288_crypto.c

@@ -264,8 +264,8 @@ static int rk_crypto_register(struct rk_crypto_info *crypto_info)
 	for (i = 0; i < ARRAY_SIZE(rk_cipher_algs); i++) {
 		rk_cipher_algs[i]->dev = crypto_info;
 		if (rk_cipher_algs[i]->type == ALG_TYPE_CIPHER)
-			err = crypto_register_alg(
-					&rk_cipher_algs[i]->alg.crypto);
+			err = crypto_register_skcipher(
+					&rk_cipher_algs[i]->alg.skcipher);
 		else
 			err = crypto_register_ahash(
 					&rk_cipher_algs[i]->alg.hash);
@@ -277,7 +277,7 @@ static int rk_crypto_register(struct rk_crypto_info *crypto_info)
 err_cipher_algs:
 	for (k = 0; k < i; k++) {
 		if (rk_cipher_algs[i]->type == ALG_TYPE_CIPHER)
-			crypto_unregister_alg(&rk_cipher_algs[k]->alg.crypto);
+			crypto_unregister_skcipher(&rk_cipher_algs[k]->alg.skcipher);
 		else
 			crypto_unregister_ahash(&rk_cipher_algs[i]->alg.hash);
 	}
@@ -290,7 +290,7 @@ static void rk_crypto_unregister(void)
 
 	for (i = 0; i < ARRAY_SIZE(rk_cipher_algs); i++) {
 		if (rk_cipher_algs[i]->type == ALG_TYPE_CIPHER)
-			crypto_unregister_alg(&rk_cipher_algs[i]->alg.crypto);
+			crypto_unregister_skcipher(&rk_cipher_algs[i]->alg.skcipher);
 		else
 			crypto_unregister_ahash(&rk_cipher_algs[i]->alg.hash);
 	}

drivers/crypto/rockchip/rk3288_crypto.h

@@ -8,6 +8,7 @@
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <crypto/internal/hash.h>
+#include <crypto/internal/skcipher.h>
 
 #include <crypto/md5.h>
 #include <crypto/sha.h>
@@ -256,7 +257,7 @@ enum alg_type {
 struct rk_crypto_tmp {
 	struct rk_crypto_info		*dev;
 	union {
-		struct crypto_alg	crypto;
+		struct skcipher_alg	skcipher;
 		struct ahash_alg	hash;
 	} alg;
 	enum alg_type			type;