From ccf5c442a1b82bf74105d72416e069607353cb82 Mon Sep 17 00:00:00 2001 From: Alastair D'Silva Date: Tue, 19 Jul 2016 14:03:53 +1000 Subject: [PATCH] crypto: vmx - Convert to CPU feature based module autoloading This patch utilises the GENERIC_CPU_AUTOPROBE infrastructure to automatically load the vmx_crypto module if the CPU supports it. Signed-off-by: Alastair D'Silva Acked-by: Herbert Xu Signed-off-by: Michael Ellerman --- drivers/crypto/vmx/Kconfig | 2 +- drivers/crypto/vmx/vmx.c | 6 ++---- 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/crypto/vmx/Kconfig b/drivers/crypto/vmx/Kconfig index 89d8208d9851..a83ead109d5f 100644 --- a/drivers/crypto/vmx/Kconfig +++ b/drivers/crypto/vmx/Kconfig @@ -1,7 +1,7 @@ config CRYPTO_DEV_VMX_ENCRYPT tristate "Encryption acceleration support on P8 CPU" depends on CRYPTO_DEV_VMX - default y + default m help Support for VMX cryptographic acceleration instructions on Power8 CPU. This module supports acceleration for AES and GHASH in hardware. If you diff --git a/drivers/crypto/vmx/vmx.c b/drivers/crypto/vmx/vmx.c index e163d5770438..5a40f2f287b1 100644 --- a/drivers/crypto/vmx/vmx.c +++ b/drivers/crypto/vmx/vmx.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -43,9 +44,6 @@ int __init p8_init(void) int ret = 0; struct crypto_alg **alg_it; - if (!(cur_cpu_spec->cpu_user_features2 & PPC_FEATURE2_VEC_CRYPTO)) - return -ENODEV; - for (alg_it = algs; *alg_it; alg_it++) { ret = crypto_register_alg(*alg_it); printk(KERN_INFO "crypto_register_alg '%s' = %d\n", @@ -78,7 +76,7 @@ void __exit p8_exit(void) crypto_unregister_shash(&p8_ghash_alg); } -module_init(p8_init); +module_cpu_feature_match(PPC_MODULE_FEATURE_VEC_CRYPTO, p8_init); module_exit(p8_exit); MODULE_AUTHOR("Marcelo Cerri"); -- 2.20.1