lkml.org 
[lkml]   [2006]   [Nov]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] Don't compare unsigned variable for <0 in sys_prctl()
Date

In kernel/sys.c::sys_prctl() the argument named 'arg2' is very clearly
of type 'unsigned long', and when compiling with "gcc -W" gcc also warns :
kernel/sys.c:2089: warning: comparison of unsigned expression < 0 is always false

So this patch removes the test of "arg2 < 0".

For those of us who compile their kernels with "-W" this gets rid of an
annoying warning. For the rest of you it saves a few bytes of source code ;-)


Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
---

diff --git a/kernel/sys.c b/kernel/sys.c
index 98489d8..086ea37 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2086,7 +2086,7 @@ asmlinkage long sys_prctl(int option, un
error = current->mm->dumpable;
break;
case PR_SET_DUMPABLE:
- if (arg2 < 0 || arg2 > 1) {
+ if (arg2 > 1) {
error = -EINVAL;
break;
}

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-11-28 23:19    [W:1.083 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site