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Commit ccf5c442 authored by Alastair D'Silva's avatar Alastair D'Silva Committed by Michael Ellerman
Browse files

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: default avatarAlastair D'Silva <alastair@d-silva.org>
Acked-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 4a120276

drivers/crypto/vmx/Kconfig

+1 −1
Original line number Diff line number Diff line 
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

drivers/crypto/vmx/vmx.c

+2 −4
Original line number Diff line number Diff line
@@ -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>");