diff options
Diffstat (limited to 'arch/s390/crypto/aes_s390.c')
| -rw-r--r-- | arch/s390/crypto/aes_s390.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c index b4dbade8ca24..46cae138ece2 100644 --- a/arch/s390/crypto/aes_s390.c +++ b/arch/s390/crypto/aes_s390.c @@ -725,6 +725,8 @@ static struct crypto_alg xts_aes_alg = { } }; +static int xts_aes_alg_reg; + static int ctr_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, unsigned int key_len) { @@ -846,6 +848,8 @@ static struct crypto_alg ctr_aes_alg = { } }; +static int ctr_aes_alg_reg; + static int __init aes_s390_init(void) { int ret; @@ -884,6 +888,7 @@ static int __init aes_s390_init(void) ret = crypto_register_alg(&xts_aes_alg); if (ret) goto xts_aes_err; + xts_aes_alg_reg = 1; } if (crypt_s390_func_available(KMCTR_AES_128_ENCRYPT, @@ -902,6 +907,7 @@ static int __init aes_s390_init(void) free_page((unsigned long) ctrblk); goto ctr_aes_err; } + ctr_aes_alg_reg = 1; } out: @@ -921,9 +927,12 @@ aes_err: static void __exit aes_s390_fini(void) { - crypto_unregister_alg(&ctr_aes_alg); - free_page((unsigned long) ctrblk); - crypto_unregister_alg(&xts_aes_alg); + if (ctr_aes_alg_reg) { + crypto_unregister_alg(&ctr_aes_alg); + free_page((unsigned long) ctrblk); + } + if (xts_aes_alg_reg) + crypto_unregister_alg(&xts_aes_alg); crypto_unregister_alg(&cbc_aes_alg); crypto_unregister_alg(&ecb_aes_alg); crypto_unregister_alg(&aes_alg); |