[CRYPTO] padlock: Get rid of padlock-generic.c

Merge padlock-generic.c into padlock-aes.c and compile
AES as a standalone module. We won't make a monolithic
padlock.ko with all supported algorithms, instead we'll
compile each driver into its own module.

Signed-off-by: Michal Ludvig <michal@logix.cz>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

4 files changed, 42 insertions, 79 deletions

diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index ba23683ab8c4..d260c86218fa 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -1,24 +1,30 @@
 menu "Hardware crypto devices"
 
 config CRYPTO_DEV_PADLOCK
-        tristate "Support for VIA PadLock ACE"
+        bool "Support for VIA PadLock ACE"
         depends on X86_32
         select CRYPTO_ALGAPI
+        default y
         help
           Some VIA processors come with an integrated crypto engine
           (so called VIA PadLock ACE, Advanced Cryptography Engine)
-          that provides instructions for very fast {en,de}cryption 
-          with some algorithms.
+          that provides instructions for very fast cryptographic
+          operations with supported algorithms.
           
           The instructions are used only when the CPU supports them.
           Otherwise software encryption is used. If you are unsure,
           say Y.
 
 config CRYPTO_DEV_PADLOCK_AES
-        bool "Support for AES in VIA PadLock"
+        tristate "PadLock driver for AES algorithm"
         depends on CRYPTO_DEV_PADLOCK
-        default y
+        default m
         help
           Use VIA PadLock for AES algorithm.
 
+          Available in VIA C3 and newer CPUs.
+
+          If unsure say M. The compiled module will be
+          called padlock-aes.ko
+
 endmenu
diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
index 45426ca19a23..5e7d7d5e805a 100644
--- a/drivers/crypto/Makefile
+++ b/drivers/crypto/Makefile
@@ -1,7 +1 @@
-
-obj-$(CONFIG_CRYPTO_DEV_PADLOCK) += padlock.o
-
-padlock-objs-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o
-
-padlock-objs := padlock-generic.o $(padlock-objs-y)
-
+obj-$(CONFIG_CRYPTO_DEV_PADLOCK_AES) += padlock-aes.o
diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index b643d71298a9..ee33bd6c1b77 100644
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -495,15 +495,41 @@ static struct crypto_alg aes_alg = {
         }
 };
 
-int __init padlock_init_aes(void)
+static int __init padlock_init(void)
 {
-        printk(KERN_NOTICE PFX "Using VIA PadLock ACE for AES algorithm.\n");
+        int ret;
+
+        if (!cpu_has_xcrypt) {
+                printk(KERN_ERR PFX "VIA PadLock not detected.\n");
+                return -ENODEV;
+        }
+
+        if (!cpu_has_xcrypt_enabled) {
+                printk(KERN_ERR PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
+                return -ENODEV;
+        }
 
         gen_tabs();
-        return crypto_register_alg(&aes_alg);
+        if ((ret = crypto_register_alg(&aes_alg))) {
+                printk(KERN_ERR PFX "VIA PadLock AES initialization failed.\n");
+                return ret;
+        }
+
+        printk(KERN_NOTICE PFX "Using VIA PadLock ACE for AES algorithm.\n");
+
+        return ret;
 }
 
-void __exit padlock_fini_aes(void)
+static void __exit padlock_fini(void)
 {
         crypto_unregister_alg(&aes_alg);
 }
+
+module_init(padlock_init);
+module_exit(padlock_fini);
+
+MODULE_DESCRIPTION("VIA PadLock AES algorithm support");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Michal Ludvig");
+
+MODULE_ALIAS("aes-padlock");
diff --git a/drivers/crypto/padlock-generic.c b/drivers/crypto/padlock-generic.c
deleted file mode 100644
index 18cf0e8274a7..000000000000
--- a/drivers/crypto/padlock-generic.c
+++ /dev/null
@@ -1,63 +0,0 @@
-/* 
- * Cryptographic API.
- *
- * Support for VIA PadLock hardware crypto engine.
- *
- * Copyright (c) 2004  Michal Ludvig <michal@logix.cz>
- *
- * 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 option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/crypto.h>
-#include <asm/byteorder.h>
-#include "padlock.h"
-
-static int __init
-padlock_init(void)
-{
-        int ret = -ENOSYS;
-        
-        if (!cpu_has_xcrypt) {
-                printk(KERN_ERR PFX "VIA PadLock not detected.\n");
-                return -ENODEV;
-        }
-
-        if (!cpu_has_xcrypt_enabled) {
-                printk(KERN_ERR PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n");
-                return -ENODEV;
-        }
-
-#ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES
-        if ((ret = padlock_init_aes())) {
-                printk(KERN_ERR PFX "VIA PadLock AES initialization failed.\n");
-                return ret;
-        }
-#endif
-
-        if (ret == -ENOSYS)
-                printk(KERN_ERR PFX "Hmm, VIA PadLock was compiled without any algorithm.\n");
-
-        return ret;
-}
-
-static void __exit
-padlock_fini(void)
-{
-#ifdef CONFIG_CRYPTO_DEV_PADLOCK_AES
-        padlock_fini_aes();
-#endif
-}
-
-module_init(padlock_init);
-module_exit(padlock_fini);
-
-MODULE_DESCRIPTION("VIA PadLock crypto engine support.");
-MODULE_LICENSE("Dual BSD/GPL");
-MODULE_AUTHOR("Michal Ludvig");