lock_bus
.lock_bus = lock_bus,
.lock_bus = gmbus_lock_bus,
sdvo->i2c->lock_ops->lock_bus(sdvo->i2c, flags);
.lock_bus = proxy_lock_bus,
void (*lock_bus)(struct i2c_adapter *, unsigned int flags);
.lock_bus = i2c_default_lock_bus,
adapter->lock_ops->lock_bus(adapter, I2C_LOCK_SEGMENT);