diff options
Diffstat (limited to 'drivers/crypto/padlock-aes.c')
| -rw-r--r-- | drivers/crypto/padlock-aes.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c index b643d71298a..ee33bd6c1b7 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"); |