1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0070-crypto-lib-chacha20poly1305-define-empty-module-exit.patch b/target/linux/generic/backport-5.4/080-wireguard-0070-crypto-lib-chacha20poly1305-define-empty-module-exit.patch
new file mode 100644
index 0000000000..084ae74bfd
--- /dev/null
+++ b/target/linux/generic/backport-5.4/080-wireguard-0070-crypto-lib-chacha20poly1305-define-empty-module-exit.patch
@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Jason A. Donenfeld" <Jason@zx2c4.com>
+Date: Fri, 15 Jan 2021 20:30:12 +0100
+Subject: [PATCH] crypto: lib/chacha20poly1305 - define empty module exit
+ function
+
+commit ac88c322d0f2917d41d13553c69e9d7f043c8b6f upstream.
+
+With no mod_exit function, users are unable to unload the module after
+use. I'm not aware of any reason why module unloading should be
+prohibited for this one, so this commit simply adds an empty exit
+function.
+
+Reported-and-tested-by: John Donnelly <john.p.donnelly@oracle.com>
+Acked-by: Ard Biesheuvel <ardb@kernel.org>
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+---
+ lib/crypto/chacha20poly1305.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/lib/crypto/chacha20poly1305.c
++++ b/lib/crypto/chacha20poly1305.c
+@@ -364,7 +364,12 @@ static int __init mod_init(void)
+ 	return 0;
+ }
+ 
++static void __exit mod_exit(void)
++{
++}
++
+ module_init(mod_init);
++module_exit(mod_exit);
+ MODULE_LICENSE("GPL v2");
+ MODULE_DESCRIPTION("ChaCha20Poly1305 AEAD construction");
+ MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");