linux-kernel - [PATCH] af_key: suppress a warning for 64k pages.

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Message-Id: <20071031162452.fcea4431.sfr@canb.auug.org.au>
Date:	Wed, 31 Oct 2007 16:24:52 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] af_key: suppress a warning for 64k pages.

On PowerPC allmodconfig build we get this:

net/key/af_key.c:400: warning: comparison is always false due to limited range of data type

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 net/key/af_key.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

This version gets rid of the warning without the ugliness of ifdefs.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

diff --git a/net/key/af_key.c b/net/key/af_key.c
index 7969f8a..266f112 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -395,9 +395,9 @@ static inline int pfkey_sec_ctx_len(struct sadb_x_sec_ctx *sec_ctx)
 static inline int verify_sec_ctx_len(void *p)
 {
 	struct sadb_x_sec_ctx *sec_ctx = (struct sadb_x_sec_ctx *)p;
-	int len;
+	int len = sec_ctx->sadb_x_ctx_len;
 
-	if (sec_ctx->sadb_x_ctx_len > PAGE_SIZE)
+	if (len > PAGE_SIZE)
 		return -EINVAL;
 
 	len = pfkey_sec_ctx_len(sec_ctx);
-- 
1.5.3.4

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