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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-05-21 10:23:37 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2017-06-01 12:55:39 +0800
commitc9d9f608b4339435ccec6bd2ec1a5c42e066788e (patch)
tree08117685634555feccb1e4f41c77f16c6a782b32 /arch/arm/crypto
parent4d8061a5918dea53402170932a861c09f3b88df5 (diff)
crypto: arm/ghash-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: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm/crypto')
-rw-r--r--arch/arm/crypto/ghash-ce-glue.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/arm/crypto/ghash-ce-glue.c b/arch/arm/crypto/ghash-ce-glue.c
index 7546b3c02466..6bac8bea9f1e 100644
--- a/arch/arm/crypto/ghash-ce-glue.c
+++ b/arch/arm/crypto/ghash-ce-glue.c
@@ -15,6 +15,7 @@
#include <crypto/cryptd.h>
#include <crypto/internal/hash.h>
#include <crypto/gf128mul.h>
+#include <linux/cpufeature.h>
#include <linux/crypto.h>
#include <linux/module.h>
@@ -311,9 +312,6 @@ static int __init ghash_ce_mod_init(void)
{
int err;
- if (!(elf_hwcap2 & HWCAP2_PMULL))
- return -ENODEV;
-
err = crypto_register_shash(&ghash_alg);
if (err)
return err;
@@ -334,5 +332,5 @@ static void __exit ghash_ce_mod_exit(void)
crypto_unregister_shash(&ghash_alg);
}
-module_init(ghash_ce_mod_init);
+module_cpu_feature_match(PMULL, ghash_ce_mod_init);
module_exit(ghash_ce_mod_exit);