函数逻辑报告

函数名称：gister_chrdev_region() - register a range of device numbers*@from: the first in the desired range of device numbers; must include* the major number.*@count: the number of consecutive device numbers required*@name: the name of the device or driver.

函数原型：int register_chrdev_region(dev_t from, unsigned count, const char *name)

返回类型：int

参数：