usb: host: u132-hcd: use DEFINE_MUTEX() for mutex lock

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

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20210405101434.14878-1-zhengyongjun3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c
index eb96e1e..5a783c4 100644 (file)
--- 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);