[PATCH v3 -next] staging: vc04_services: use DEFINE_MUTEX() for mutex lock

[Zheng Yongjun]

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

Signed-off-by: Zheng Yongjun <zhengyongj...@huawei.com>
---
 .../vc04_services/interface/vchiq_arm/vchiq_connected.c     | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git 
a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_connected.c 
b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_connected.c
index 79b75efa6868..938307f39b9c 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_connected.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_connected.c
@@ -12,15 +12,13 @@ static   int                        g_connected;
 static   int                        g_num_deferred_callbacks;
 static   VCHIQ_CONNECTED_CALLBACK_T g_deferred_callback[MAX_CALLBACKS];
 static   int                        g_once_init;
-static   struct mutex               g_connected_mutex;
+static   DEFINE_MUTEX(g_connected_mutex);
 
 /* Function to initialize our lock */
 static void connected_init(void)
 {
-       if (!g_once_init) {
-               mutex_init(&g_connected_mutex);
+       if (!g_once_init)
                g_once_init = 1;
-       }
 }
 
 /*
-- 
2.22.0