From: Eric Biggers <ebiggers@google.com>
Date: Wed, 23 Dec 2020 08:09:56 +0000 (-0800)
Subject: crypto: blake2s - add comment for blake2s_state fields
X-Git-Tag: v5.12-rc1~124^2~121
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7d87131fadd53a0401b5c078dd64e58c3ea6994c;p=thirdparty%2Fkernel%2Flinux.git

crypto: blake2s - add comment for blake2s_state fields

The first three fields of 'struct blake2s_state' are used in assembly
code, which isn't immediately obvious, so add a comment to this effect.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/include/crypto/blake2s.h b/include/crypto/blake2s.h
index 734ed22b7a6aa..f1c8330a61a91 100644
--- a/include/crypto/blake2s.h
+++ b/include/crypto/blake2s.h
@@ -24,6 +24,7 @@ enum blake2s_lengths {
 };
 
 struct blake2s_state {
+	/* 'h', 't', and 'f' are used in assembly code, so keep them as-is. */
 	u32 h[8];
 	u32 t[2];
 	u32 f[2];