From 2a3fd57b36c7706bc126fb10a9f34e72dd00fd86 Mon Sep 17 00:00:00 2001
From: Daniel Pouzzner <douzzer@wolfssl.com>
Date: Wed, 19 Aug 2020 13:39:54 -0500
Subject: [PATCH] linuxkm/Kbuild, linuxkm/module_hooks.c: tweaks for
 buildability on kernel 4.9 (may also fix build on 3.x).

---
 linuxkm/Kbuild         | 5 +----
 linuxkm/module_hooks.c | 8 ++++++++
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/linuxkm/Kbuild b/linuxkm/Kbuild
index 83d1d3c68..f3043d7fb 100644
--- a/linuxkm/Kbuild
+++ b/linuxkm/Kbuild
@@ -18,12 +18,9 @@ ifeq "$(WOLFSSL_CFLAGS)" ""
 $(error $$WOLFSSL_CFLAGS is unset.)
 endif
 
-ifeq "$(WOLFSSL_ASFLAGS)" ""
-$(error $$WOLFSSL_ASFLAGS is unset.)
-endif
-
 libwolfssl-y := $(WOLFSSL_OBJ_FILES)
 
 ccflags-y := $(WOLFSSL_CFLAGS)
+%/libwolfssl.mod.o: ccflags-y :=
 
 asflags-y := $(WOLFSSL_ASFLAGS)
diff --git a/linuxkm/module_hooks.c b/linuxkm/module_hooks.c
index 1a25bad04..ff90e6488 100644
--- a/linuxkm/module_hooks.c
+++ b/linuxkm/module_hooks.c
@@ -10,7 +10,11 @@
 #include <wolfssl/wolfcrypt/error-crypt.h>
 #include <wolfssl/ssl.h>
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
 static int __init wolfssl_init(void)
+#else
+static int wolfssl_init(void)
+#endif
 {
     int ret = wolfSSL_Init();
     if (ret != WOLFSSL_SUCCESS) {
@@ -26,7 +30,11 @@ static int __init wolfssl_init(void)
 
 module_init(wolfssl_init);
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
 static void __exit wolfssl_exit(void)
+#else
+static void wolfssl_exit(void)
+#endif
 {
     int ret = wolfSSL_Cleanup();
     if (ret != WOLFSSL_SUCCESS)