3 files changed, 30 insertions, 2 deletions
diff --git a/src/crypto/zinc/curve25519/curve25519-arm-glue.h b/src/crypto/zinc/curve25519/curve25519-arm-glue.h
index 1b39920..a547732 100644
--- a/src/crypto/zinc/curve25519/curve25519-arm-glue.h
+++ b/src/crypto/zinc/curve25519/curve25519-arm-glue.h
@@ -16,7 +16,7 @@ asmlinkage void curve25519_neon(u8 mypublic[CURVE25519_POINT_SIZE],
 
 static bool curve25519_use_neon __ro_after_init;
 
-void __init curve25519_fpu_init(void)
+static void __init curve25519_fpu_init(void)
 {
 	curve25519_use_neon = elf_hwcap & HWCAP_NEON;
 }
diff --git a/src/crypto/zinc/curve25519/curve25519-x86_64-glue.h b/src/crypto/zinc/curve25519/curve25519-x86_64-glue.h
index 9159460..1b9b719 100644
--- a/src/crypto/zinc/curve25519/curve25519-x86_64-glue.h
+++ b/src/crypto/zinc/curve25519/curve25519-x86_64-glue.h
@@ -11,7 +11,7 @@
 static bool curve25519_use_bmi2 __ro_after_init;
 static bool curve25519_use_adx __ro_after_init;
 
-void __init curve25519_fpu_init(void)
+static void __init curve25519_fpu_init(void)
 {
 	curve25519_use_bmi2 = boot_cpu_has(X86_FEATURE_BMI2);
 	curve25519_use_adx = boot_cpu_has(X86_FEATURE_BMI2) &&
diff --git a/src/crypto/zinc/curve25519/curve25519.c b/src/crypto/zinc/curve25519/curve25519.c
index 7d19fb9..fca327f 100644
--- a/src/crypto/zinc/curve25519/curve25519.c
+++ b/src/crypto/zinc/curve25519/curve25519.c
@@ -15,6 +15,8 @@
 #include <linux/version.h>
 #include <linux/string.h>
 #include <linux/random.h>
+#include <linux/module.h>
+#include <linux/init.h>
 #include <crypto/algapi.h>
 
 #if defined(CONFIG_ZINC_ARCH_X86_64)
@@ -85,3 +87,29 @@ void curve25519_generate_secret(u8 secret[CURVE25519_POINT_SIZE])
 EXPORT_SYMBOL(curve25519_generate_secret);
 
 #include "../selftest/curve25519.h"
+
+#ifndef COMPAT_ZINC_IS_A_MODULE
+int __init curve25519_mod_init(void)
+#else
+static int __init mod_init(void)
+#endif
+{
+	curve25519_fpu_init();
+#ifdef DEBUG
+	if (!curve25519_selftest())
+		return -ENOTRECOVERABLE;
+#endif
+	return 0;
+}
+
+#ifdef COMPAT_ZINC_IS_A_MODULE
+static void __exit mod_exit(void)
+{
+}
+
+module_init(mod_init);
+module_exit(mod_exit);
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Curve25519 scalar multiplication");
+MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");
+#endif