[DeviceDriver] Remove i2c_core_lock.

components/drivers/i2c/i2c_core.c

@@ -24,8 +24,6 @@
 
 #include <rtdevice.h>
 
-static struct rt_mutex i2c_core_lock;
-
 rt_err_t rt_i2c_bus_device_register(struct rt_i2c_bus_device *bus,
                                     const char               *bus_name)
 {
@@ -33,17 +31,12 @@ rt_err_t rt_i2c_bus_device_register(struct rt_i2c_bus_device *bus,
 
     rt_mutex_init(&bus->lock, "i2c_bus_lock", RT_IPC_FLAG_FIFO);
 
-    rt_mutex_take(&i2c_core_lock, RT_WAITING_FOREVER);
-
-    if (bus->timeout == 0)
-        bus->timeout = RT_TICK_PER_SECOND;
+    if (bus->timeout == 0) bus->timeout = RT_TICK_PER_SECOND;
 
     res = rt_i2c_bus_device_device_init(bus, bus_name);
 
     i2c_dbg("I2C bus [%s] registered\n", bus_name);
 
-    rt_mutex_release(&i2c_core_lock);
-
     return res;
 }
 
@@ -136,6 +129,6 @@ rt_size_t rt_i2c_master_recv(struct rt_i2c_bus_device *bus,
 
 int rt_i2c_core_init(void)
 {
-    return rt_mutex_init(&i2c_core_lock, "i2c_core_lock", RT_IPC_FLAG_FIFO);
+    return 0;
 }
 INIT_COMPONENT_EXPORT(rt_i2c_core_init);