linux-kernel - [PATCH -next] usb: usbip: Use DEFINE

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Message-ID: <20201223141431.835-1-zhengyongjun3@huawei.com>
Date:   Wed, 23 Dec 2020 22:14:31 +0800
From:   Zheng Yongjun <zhengyongjun3@...wei.com>
To:     <valentina.manea.m@...il.com>, <shuah@...nel.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Zheng Yongjun <zhengyongjun3@...wei.com>
Subject: [PATCH -next] usb: usbip: Use DEFINE_SPINLOCK() for spinlock

spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().

Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
---
 drivers/usb/usbip/stub_main.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/usb/usbip/stub_main.c b/drivers/usb/usbip/stub_main.c
index c1c0bbc9f8b1..77a5b3f8736a 100644
--- a/drivers/usb/usbip/stub_main.c
+++ b/drivers/usb/usbip/stub_main.c
@@ -23,7 +23,7 @@ struct kmem_cache *stub_priv_cache;
  */
 #define MAX_BUSID 16
 static struct bus_id_priv busid_table[MAX_BUSID];
-static spinlock_t busid_table_lock;
+static DEFINE_SPINLOCK(busid_table_lock);
 
 static void init_busid_table(void)
 {
@@ -35,8 +35,6 @@ static void init_busid_table(void)
 	 */
 	memset(busid_table, 0, sizeof(busid_table));
 
-	spin_lock_init(&busid_table_lock);
-
 	for (i = 0; i < MAX_BUSID; i++)
 		spin_lock_init(&busid_table[i].busid_lock);
 }
-- 
2.22.0