linux-kernel - [PATCH] CRED: fix compilation warning in function 'get

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Message-ID: <154e089b0811201400w6b5d249eyc21ebb9a76133d08@mail.gmail.com>
Date:	Thu, 20 Nov 2008 23:00:17 +0100
From:	"Hannes Eder" <hannes@...neseder.net>
To:	"David Howells" <dhowells@...hat.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] CRED: fix compilation warning in function 'get_cred'

Fix to following warning by introducing a temporary variable:

include/linux/cred.h: In function 'get_cred':
include/linux/cred.h:187: warning: passing argument 1 of
'get_new_cred' discards qualifiers from pointer target type

Signed-off-by: Hannes Eder <hannes@...neseder.net>
---
With -O2 the same code as for the original function is generated.

 include/linux/cred.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/include/linux/cred.h b/include/linux/cred.h
index 26c1ab1..2ab8cf7 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -184,7 +184,8 @@ static inline struct cred *get_new_cred(struct cred *cred)
  */
 static inline const struct cred *get_cred(const struct cred *cred)
 {
-	return get_new_cred((struct cred *) cred);
+	struct cred *non_const_cred = (struct cred *) cred;
+	return get_new_cred(non_const_cred);
 }

 /**
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