Web Reference: To implement a device driver, it is recommended that you create a structure that contains information about the device, information used in the module. In the case of a driver for a character device, the structure will contain a cdev structure field to refer to the device. Allocates a range of char device numbers. The major number will be chosen dynamically, and returned (along with the first minor number) in dev. Returns zero or a negative error code. Mar 23, 2012 · To put in simple terms: You use register_chrdev_region when you have the device ID for your character driver with you and you want to inform the VFS that reserve this device ID (basically the Major Number) for your driver.
YouTube Excerpt: So I am back at it again working on Linux Internals and today I am going to do just an introduction to SysFS, Proc and UDev, I will ...
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