variable `xxx' has initializer but incomplete type

说明xxx对应的类型没有找到，类型需要定义.

static struct i2c_driver touchkey_i2c_driver  =
{
.driver = {
.owner = THIS_MODULE, 
.name = "i2ctouchpannel",
},
.probe = &i2ctouchpannel_probe,
.remove = &i2ctouchpannel_remove,
.id_table = i2ctouch_pannel,
};

在调用内核已经定义好的结构体去初始化我们定义的变量的时候，

如出现 variable 'touchkey_i2c_driver' has initializer but incomplete type，其实就是说明touchkey_i2c_driver 没有被定义，进而说明是“i2c_driver ”

没有被定义，更进一步，其实就是没有#include 相对应的头文件。

如#include <linux/i2c.h>之后，就不会出现variable 'touchkey_i2c_driver' has initializer but incomplete type