From 7d87131fadd53a0401b5c078dd64e58c3ea6994c Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Wed, 23 Dec 2020 00:09:56 -0800
Subject: 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>
---
 include/crypto/blake2s.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/crypto')

diff --git a/include/crypto/blake2s.h b/include/crypto/blake2s.h
index 734ed22b7a6a..f1c8330a61a9 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];
-- 
cgit