[dunfell][meta-networking] wireguard-module: fix build issue with 5.4 kernel

[dunfell][meta-networking] wireguard-module: fix build issue with 5.4 kernel

[akuster]

 /tmp/work/qemux86_64-poky-linux/wireguard-module/1.0.20200401-r0/git/src/compat/compat-asm.h:44: warning: "SYM_FUNC_START" redefined
|    44 | #define SYM_FUNC_START ENTRY
|       |
| In file included from /tmp/work/qemux86_64-poky-linux/wireguard-module/1.0.20200401-r0/git/src/compat/compat-asm.h:9,
|                  from <command-line>:
| /tmp/work-shared/qemux86-64/kernel-source/include/linux/linkage.h:218: note: this is the location of the previous definition
|   218 | #define SYM_FUNC_START(name)    \
|       |
| In file included from <command-line>:
| /tmp/work/qemux86_64-poky-linux/wireguard-module/1.0.20200401-r0/git/src/compat/compat-asm.h:45: warning: "SYM_FUNC_END" redefined
|    45 | #define SYM_FUNC_END ENDPROC
|       |

Backporit fix from upstream

Signed-off-by: Armin Kuster <akuster808@gmail.com>
---
 ...NC_-START-END-were-backported-to-5.4.patch | 29 +++++++++++++++++++
 .../wireguard-module_1.0.20200401.bb          |  3 +-
 2 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 meta-networking/recipes-kernel/wireguard/files/0001-compat-SYM_FUNC_-START-END-were-backported-to-5.4.patch

diff --git a/meta-networking/recipes-kernel/wireguard/files/0001-compat-SYM_FUNC_-START-END-were-backported-to-5.4.patch b/meta-networking/recipes-kernel/wireguard/files/0001-compat-SYM_FUNC_-START-END-were-backported-to-5.4.patch
new file mode 100644
index 00000000000..a9dc9dc2b7f
--- /dev/null
+++ b/meta-networking/recipes-kernel/wireguard/files/0001-compat-SYM_FUNC_-START-END-were-backported-to-5.4.patch
@@ -0,0 +1,29 @@
+From ce8faa3ee266ea69431805e6ed4bd7102d982508 Mon Sep 17 00:00:00 2001
+From: "Jason A. Donenfeld" <Jason@zx2c4.com>
+Date: Thu, 12 Nov 2020 09:43:38 +0100
+Subject: [PATCH] compat: SYM_FUNC_{START,END} were backported to 5.4
+
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+
+Upstream-Status: Backport
+Fixes build failure in Dunfell.
+
+Signed-off-by: Armin Kuster <akuster808@gmail.com>
+
+---
+ compat/compat-asm.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+Index: src/compat/compat-asm.h
+===================================================================
+--- src.orig/compat/compat-asm.h
++++ src/compat/compat-asm.h
+@@ -40,7 +40,7 @@
+ #undef pull
+ #endif
+ 
+-#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 5, 0)
++#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 76)
+ #define SYM_FUNC_START ENTRY
+ #define SYM_FUNC_END ENDPROC
+ #endif
diff --git a/meta-networking/recipes-kernel/wireguard/wireguard-module_1.0.20200401.bb b/meta-networking/recipes-kernel/wireguard/wireguard-module_1.0.20200401.bb
index 73199592c88..45324c02a16 100644
--- a/meta-networking/recipes-kernel/wireguard/wireguard-module_1.0.20200401.bb
+++ b/meta-networking/recipes-kernel/wireguard/wireguard-module_1.0.20200401.bb
@@ -2,7 +2,8 @@ require wireguard.inc
 
 SRCREV = "43f57dac7b8305024f83addc533c9eede6509129"
 
-SRC_URI = "git://git.zx2c4.com/wireguard-linux-compat"
+SRC_URI = "git://git.zx2c4.com/wireguard-linux-compat \
+           file://0001-compat-SYM_FUNC_-START-END-were-backported-to-5.4.patch"
 
 inherit module kernel-module-split
 
-- 
2.17.1