linux-kernel - [PATCH] kernel: arg2 is unsigned long which is never

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Date:	Wed, 06 Feb 2013 16:44:35 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	akpm@...ux-foundation.org, keescook@...omium.org,
	serge.hallyn@...onical.com, gorcunov@...nvz.org,
	ebiederm@...ssion.com,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] kernel: arg2 is unsigned long which is never < 0


  arg2 will never < 0, for its type is 'unsigned long'

  so delete the waste code.


Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 kernel/sys.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sys.c b/kernel/sys.c
index 24d1ef5..568b9ca 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2027,7 +2027,7 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
 			error = get_dumpable(me->mm);
 			break;
 		case PR_SET_DUMPABLE:
-			if (arg2 < 0 || arg2 > 1) {
+			if (arg2 > 1) {
 				error = -EINVAL;
 				break;
 			}
-- 
1.7.7.6
--
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