lkml.org 
[lkml]   [2010]   [Jun]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used
On 06/19/2010 01:08 AM, Geert Uytterhoeven wrote:
> On Sat, Jun 19, 2010 at 07:04, Justin P. Mattock
> <justinmattock@gmail.com> wrote:
>>> Also wrong, you removed the creation of the links in sysfs.
>>>
>>> The assignment to nowarn was there to avoid another compiler warning,
>>> as sysfs_create_link() is marked __must_check.
>>
>> I also went back to this one and made the following changes.. let me know if
>> it's wrong etc..
>>
>> From 4f45beed80627d2bb32fb021bb6d22d88089557b Mon Sep 17 00:00:00 2001
>> From: Justin P. Mattock<justinmattock@gmail.com>
>> Date: Fri, 18 Jun 2010 22:01:07 -0700
>> Subject: [PATCH 5/5] module.c
>> Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>
>> ---
>> kernel/module.c | 3 +--
>> 1 files changed, 1 insertions(+), 2 deletions(-)
>>
>> diff --git a/kernel/module.c b/kernel/module.c
>> index 8c6b428..48fc5c8 100644
>> --- a/kernel/module.c
>> +++ b/kernel/module.c
>> @@ -1340,11 +1340,10 @@ static void add_usage_links(struct module *mod)
>> {
>> #ifdef CONFIG_MODULE_UNLOAD
>> struct module_use *use;
>> - int nowarn;
>>
>> mutex_lock(&module_mutex);
>> list_for_each_entry(use,&mod->target_list, target_list) {
>> - nowarn = sysfs_create_link(use->target->holders_dir,
>> + sysfs_create_link(use->target->holders_dir,
>> &mod->mkobj.kobj, mod->name);
>> }
>> mutex_unlock(&module_mutex);
>> --
>> 1.7.1.rc1.21.gf3bd6
>>
>> if it looks good, then I can resend it out.
>
> Have you compile-tested this?
> As sysfs_create_link() is marked __must_check, that will cause another compiler
> warning, but only if CONFIG_SYSFS=y.
>

yeah I did compile test this. greping SYSFS I do have that enabled in
the kernel just to make sure I reset the kernel compiled the warning
showed up, thenI applied this patch and the warning was not there.
could be something different then.

> Perhaps you can just mark the nowarn variable __unused?

sure.. I'll give that a try..

>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
>


again Thanks for your time and info.

Justin P. Mattock


\
 
 \ /
  Last update: 2010-06-19 15:43    [W:0.095 / U:0.708 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site