linux-kernel - [PATCH -next] driver core: Remove set but not used variable 'no

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Message-ID: <20210527091453.3880695-1-libaokun1@huawei.com>
Date:   Thu, 27 May 2021 17:14:53 +0800
From:   Baokun Li <libaokun1@...wei.com>
To:     <gregkh@...uxfoundation.org>, <rafael@...nel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <weiyongjun1@...wei.com>, <yuehaibing@...wei.com>,
        <yangjihong1@...wei.com>, <yukuai3@...wei.com>,
        <libaokun1@...wei.com>
Subject: [PATCH -next] driver core: Remove set but not used variable 'no_warn'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/base/module.c: In function 'module_create_drivers_dir':
drivers/base/module.c:36:6: warning:
 variable ‘no_warn’ set but not used [-Wunused-but-set-variable]

It never used since introduction.

Signed-off-by: Baokun Li <libaokun1@...wei.com>
---
 drivers/base/module.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/base/module.c b/drivers/base/module.c
index 46ad4d636731..07ecd66b12b0 100644
--- a/drivers/base/module.c
+++ b/drivers/base/module.c
@@ -33,7 +33,6 @@ static void module_create_drivers_dir(struct module_kobject *mk)
 void module_add_driver(struct module *mod, struct device_driver *drv)
 {
 	char *driver_name;
-	int no_warn;
 	struct module_kobject *mk = NULL;
 
 	if (!drv)
@@ -59,12 +58,12 @@ void module_add_driver(struct module *mod, struct device_driver *drv)
 		return;
 
 	/* Don't check return codes; these calls are idempotent */
-	no_warn = sysfs_create_link(&drv->p->kobj, &mk->kobj, "module");
+	sysfs_create_link(&drv->p->kobj, &mk->kobj, "module");
 	driver_name = make_driver_name(drv);
 	if (driver_name) {
 		module_create_drivers_dir(mk);
-		no_warn = sysfs_create_link(mk->drivers_dir, &drv->p->kobj,
-					    driver_name);
+		sysfs_create_link(mk->drivers_dir, &drv->p->kobj,
+				  driver_name);
 		kfree(driver_name);
 	}
 }
-- 
2.25.4