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Commit a83ff88b authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Herbert Xu
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crypto: arm/sha2-ce - enable module autoloading based on CPU feature bits 



Make the module autoloadable by tying it to the CPU feature bit that
describes whether the optional instructions it relies on are implemented
by the current CPU.

Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent bd56f95e

arch/arm/crypto/sha2-ce-glue.c

+2 −3
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <crypto/internal/hash.h>

#include <crypto/sha.h>

#include <crypto/sha256_base.h>

#include <linux/cpufeature.h>

#include <linux/crypto.h>

#include <linux/module.h>
@@ -100,8 +101,6 @@ static struct shash_alg algs[] = { { 


static int __init sha2_ce_mod_init(void)

{

	if (!(elf_hwcap2 & HWCAP2_SHA2))

		return -ENODEV;

	return crypto_register_shashes(algs, ARRAY_SIZE(algs));

}
@@ -110,5 +109,5 @@ static void __exit sha2_ce_mod_fini(void) 
	crypto_unregister_shashes(algs, ARRAY_SIZE(algs));

}



module_init(sha2_ce_mod_init);

module_cpu_feature_match(SHA2, sha2_ce_mod_init);

module_exit(sha2_ce_mod_fini);