linux-kernel - [PATCH v2 11/30] sunrpc: use parity8

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Message-Id: <1459934823-7277-1-git-send-email-zengzhaoxiu@163.com>
Date:	Wed,  6 Apr 2016 17:27:03 +0800
From:	zengzhaoxiu@....com
To:	bfields@...ldses.org, jlayton@...chiereds.net,
	trond.myklebust@...marydata.com, anna.schumaker@...app.com,
	davem@...emloft.net, herbert@...dor.apana.org.au
Cc:	linux-nfs@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, Zhaoxiu Zeng <zhaoxiu.zeng@...il.com>
Subject: [PATCH v2 11/30] sunrpc: use parity8

From: Zhaoxiu Zeng <zhaoxiu.zeng@...il.com>

Signed-off-by: Zhaoxiu Zeng <zhaoxiu.zeng@...il.com>
---
 net/sunrpc/auth_gss/gss_krb5_keys.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/net/sunrpc/auth_gss/gss_krb5_keys.c b/net/sunrpc/auth_gss/gss_krb5_keys.c
index 8701331..c41b389 100644
--- a/net/sunrpc/auth_gss/gss_krb5_keys.c
+++ b/net/sunrpc/auth_gss/gss_krb5_keys.c
@@ -243,16 +243,12 @@ err_return:
 	return ret;
 }
 
-#define smask(step) ((1<<step)-1)
-#define pstep(x, step) (((x)&smask(step))^(((x)>>step)&smask(step)))
-#define parity_char(x) pstep(pstep(pstep((x), 4), 2), 1)
-
 static void mit_des_fixup_key_parity(u8 key[8])
 {
 	int i;
 	for (i = 0; i < 8; i++) {
 		key[i] &= 0xfe;
-		key[i] |= 1^parity_char(key[i]);
+		key[i] |= !parity8(key[i]);
 	}
 }
 
-- 
2.5.0