linux-kernel - [PATCH v3 2/2] staging: skein: Adds Loadable Module Support

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Message-ID: <fa9c4d268834eda2f66280e24ca2fdaf4fabcf30.1414102205.git.eric.rost@mybabylon.net>
Date:	Thu, 23 Oct 2014 17:12:31 -0500
From:	Eric Rost <eric.rost@...abylon.net>
To:	gregkh@...uxfoundation.org, jason@...edaemon.net, jake@....net,
	antonysaraev@...il.com
Cc:	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 2/2] staging: skein: Adds Loadable Module Support

Adds loadable module support for the Skein Hashing Algorithm.

Signed-off-by: Eric Rost <eric.rost@...abylon.net>
---
 drivers/staging/skein/Kconfig         |  2 +-
 drivers/staging/skein/skein_generic.c | 19 ++++++++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/skein/Kconfig b/drivers/staging/skein/Kconfig
index de8bdd7..012a823 100644
--- a/drivers/staging/skein/Kconfig
+++ b/drivers/staging/skein/Kconfig
@@ -1,5 +1,5 @@
 config CRYPTO_SKEIN
-	bool "Skein digest algorithm"
+	tristate "Skein digest algorithm"
 	depends on (X86 || UML_X86) && 64BIT && CRYPTO
 	select CRYPTO_HASH
 	select CRYPTO_ALGAPI
diff --git a/drivers/staging/skein/skein_generic.c b/drivers/staging/skein/skein_generic.c
index 815f9a4..3c9c6d0 100644
--- a/drivers/staging/skein/skein_generic.c
+++ b/drivers/staging/skein/skein_generic.c
@@ -16,6 +16,7 @@
  */
 #include <linux/types.h>
 #include <linux/init.h>
+#include <linux/module.h>
 #include <crypto/internal/hash.h>
 #include "skein_base.h"
 
@@ -142,6 +143,7 @@ static struct shash_alg alg256 = {
 		.cra_driver_name	=	"skein",
 		.cra_flags		=	CRYPTO_ALG_TYPE_SHASH,
 		.cra_blocksize		=	SKEIN_256_BLOCK_BYTES,
+		.cra_module		=	THIS_MODULE,
 	}
 };
 
@@ -159,6 +161,7 @@ static struct shash_alg alg512 = {
 		.cra_driver_name	=	"skein",
 		.cra_flags		=	CRYPTO_ALG_TYPE_SHASH,
 		.cra_blocksize		=	SKEIN_512_BLOCK_BYTES,
+		.cra_module		=	THIS_MODULE,
 	}
 };
 
@@ -176,6 +179,7 @@ static struct shash_alg alg1024 = {
 		.cra_driver_name	=	"skein",
 		.cra_flags		=	CRYPTO_ALG_TYPE_SHASH,
 		.cra_blocksize		=	SKEIN_1024_BLOCK_BYTES,
+		.cra_module		=	THIS_MODULE,
 	}
 };
 
@@ -191,4 +195,17 @@ static int __init skein_generic_init(void)
 	return 0;
 }
 
-device_initcall(skein_generic_init);
+static void __exit skein_generic_fini(void)
+{
+	crypto_unregister_shash(&alg256);
+	crypto_unregister_shash(&alg512);
+	crypto_unregister_shash(&alg1024);
+}
+
+module_init(skein_generic_init);
+module_exit(skein_generic_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Skein Hash Algorithm");
+
+MODULE_ALIAS("skein");
-- 
2.1.1

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