linux-kernel - [PATCH v2 -next] usb: host: use DEFINE

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Message-ID: <20201224132545.31677-1-zhengyongjun3@huawei.com>
Date:   Thu, 24 Dec 2020 21:25:45 +0800
From:   Zheng Yongjun <zhengyongjun3@...wei.com>
To:     <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <gregkh@...uxfoundation.org>,
        Zheng Yongjun <zhengyongjun3@...wei.com>
Subject: [PATCH v2 -next] usb: host: use DEFINE_MUTEX() for mutex lock

mutex lock can be initialized automatically with DEFINE_MUTEX()
rather than explicitly calling mutex_init().

Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
---
 drivers/usb/host/u132-hcd.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c
index 995bc52d2d22..fb692719a03a 100644
--- a/drivers/usb/host/u132-hcd.c
+++ b/drivers/usb/host/u132-hcd.c
@@ -78,7 +78,7 @@ static DECLARE_WAIT_QUEUE_HEAD(u132_hcd_wait);
 * u132_module_lock exists to protect access to global variables
 *
 */
-static struct mutex u132_module_lock;
+static DEFINE_MUTEX(u132_module_lock);
 static int u132_exiting;
 static int u132_instances;
 /*
@@ -3190,7 +3190,6 @@ static int __init u132_hcd_init(void)
 	int retval;
 	u132_instances = 0;
 	u132_exiting = 0;
-	mutex_init(&u132_module_lock);
 	if (usb_disabled())
 		return -ENODEV;
 	printk(KERN_INFO "driver %s\n", hcd_name);
-- 
2.22.0