Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

On Sat, Jun 19, 2010 at 07:04, Justin P. Mattock <justinmattock(a)gmail.com&gt; 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&lt;justinmattock(a)gmail.com&gt; > Date: Fri, 18 Jun 2010 22:01:07 -0700 > Subject: [PATCH 5/5] module.c > Signed-off-by: Justin P. Mattock&lt;justinmattock(a)gmail.com&gt; > > --- > 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. Perhaps you can just mark the nowarn variable __unused?