crypto: rng - Remove krng

This patch removes krng so that DRBG can take its place.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/Makefile

@@ -95,7 +95,6 @@ obj-$(CONFIG_CRYPTO_LZ4) += lz4.o
 obj-$(CONFIG_CRYPTO_LZ4HC) += lz4hc.o
 obj-$(CONFIG_CRYPTO_842) += 842.o
 obj-$(CONFIG_CRYPTO_RNG2) += rng.o
-obj-$(CONFIG_CRYPTO_RNG2) += krng.o
 obj-$(CONFIG_CRYPTO_ANSI_CPRNG) += ansi_cprng.o
 obj-$(CONFIG_CRYPTO_DRBG) += drbg.o
 CFLAGS_jitterentropy.o = -O0

crypto/krng.c

-/*
- * RNG implementation using standard kernel RNG.
- *
- * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * any later version.
- *
- */
-
-#include <crypto/internal/rng.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/random.h>
-
-static int krng_generate(struct crypto_rng *tfm,
-			 const u8 *src, unsigned int slen,
-			 u8 *rdata, unsigned int dlen)
-{
-	get_random_bytes(rdata, dlen);
-	return 0;
-}
-
-static int krng_seed(struct crypto_rng *tfm, const u8 *seed, unsigned int slen)
-{
-	return 0;
-}
-
-static struct rng_alg krng_alg = {
-	.generate		= krng_generate,
-	.seed			= krng_seed,
-	.base			=	{
-		.cra_name		= "stdrng",
-		.cra_driver_name	= "krng",
-		.cra_priority		= 200,
-		.cra_module		= THIS_MODULE,
-	}
-};
-
-
-/* Module initalization */
-static int __init krng_mod_init(void)
-{
-	return crypto_register_rng(&krng_alg);
-}
-
-static void __exit krng_mod_fini(void)
-{
-	crypto_unregister_rng(&krng_alg);
-}
-
-module_init(krng_mod_init);
-module_exit(krng_mod_fini);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Kernel Random Number Generator");
-MODULE_ALIAS_CRYPTO("stdrng");
-MODULE_ALIAS_CRYPTO("krng");