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| author | Alastair D'Silva | 2016-07-19 06:03:53 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2016-07-21 12:33:57 +0200 |
| commit | ccf5c442a1b82bf74105d72416e069607353cb82 (patch) | |
| tree | bf314f50e9d14b4a381cd99a06862b030386c4ba /drivers/crypto/vmx | |
| parent | powerpc: Add module autoloading based on CPU features (diff) | |
| download | kernel-qcow2-linux-ccf5c442a1b82bf74105d72416e069607353cb82.tar.gz kernel-qcow2-linux-ccf5c442a1b82bf74105d72416e069607353cb82.tar.xz kernel-qcow2-linux-ccf5c442a1b82bf74105d72416e069607353cb82.zip | |
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 <alastair@d-silva.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/crypto/vmx')
| -rw-r--r-- | drivers/crypto/vmx/Kconfig | 2 | ||||
| -rw-r--r-- | 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 <linux/moduleparam.h> #include <linux/types.h> #include <linux/err.h> +#include <linux/cpufeature.h> #include <linux/crypto.h> #include <asm/cputable.h> #include <crypto/internal/hash.h> @@ -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<mhcerri@br.ibm.com>"); |