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register_chrdev_region()和registe_chrdev()_czc0713的专栏

extern int alloc_chrdev_region(dev_t, unsigned, const char *);//动态的申请注册一个设备号 extern int register_chrdev(unsigned int, const char *,

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  1. Alloc_chrdev_region
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  3. Class_create
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  5. Cdev_init
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  8. Unregister_chrdev_region
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