[PATCH] lib: crypto: add missing MODULE_DESCRIPTION() macros

[Jeff Johnson]

Fix the allmodconfig 'make W=1' warnings:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libchacha.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libarc4.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libdes.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libpoly1305.o

Signed-off-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>
---
 lib/crypto/arc4.c      | 1 +
 lib/crypto/des.c       | 1 +
 lib/crypto/libchacha.c | 1 +
 lib/crypto/poly1305.c  | 1 +
 4 files changed, 4 insertions(+)

diff --git a/lib/crypto/arc4.c b/lib/crypto/arc4.c
index c2020f19c652..838812d18216 100644
--- a/lib/crypto/arc4.c
+++ b/lib/crypto/arc4.c
@@ -71,4 +71,5 @@ void arc4_crypt(struct arc4_ctx *ctx, u8 *out, const u8 *in, unsigned int len)
 }
 EXPORT_SYMBOL(arc4_crypt);
 
+MODULE_DESCRIPTION("ARC4 Cipher Algorithm");
 MODULE_LICENSE("GPL");
diff --git a/lib/crypto/des.c b/lib/crypto/des.c
index ef5bb8822aba..9518658b97cf 100644
--- a/lib/crypto/des.c
+++ b/lib/crypto/des.c
@@ -899,4 +899,5 @@ void des3_ede_decrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src)
 }
 EXPORT_SYMBOL_GPL(des3_ede_decrypt);
 
+MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms");
 MODULE_LICENSE("GPL");
diff --git a/lib/crypto/libchacha.c b/lib/crypto/libchacha.c
index dabc3accae05..cc1be0496eb9 100644
--- a/lib/crypto/libchacha.c
+++ b/lib/crypto/libchacha.c
@@ -32,4 +32,5 @@ void chacha_crypt_generic(u32 *state, u8 *dst, const u8 *src,
 }
 EXPORT_SYMBOL(chacha_crypt_generic);
 
+MODULE_DESCRIPTION("ChaCha stream cipher (RFC7539)");
 MODULE_LICENSE("GPL");
diff --git a/lib/crypto/poly1305.c b/lib/crypto/poly1305.c
index 26d87fc3823e..5d8378d23e95 100644
--- a/lib/crypto/poly1305.c
+++ b/lib/crypto/poly1305.c
@@ -76,3 +76,4 @@ EXPORT_SYMBOL_GPL(poly1305_final_generic);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Martin Willi <martin@xxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Poly1305 authenticator algorithm, RFC7539");

---
base-commit: e0cce98fe279b64f4a7d81b7f5c3a23d80b92fbc
change-id: 20240528-md-lib-crypto-f520796646ff