Character driver file operation methods     In the previous article, we explored about the cdev_init() and cdev_add().We actually registered our character device using cdev, and the cdev structure…

  Character device registration contd.     In the previous article, we completed cdev_init(). Now, we have to register our cdev structure with kernels VFS, that is, the virtual file…

  Character device registration     In our previous article, We finished our very first task, that is creating a device number (as shown in Figure 1).   Let's go to…

  Pseudo character driver implementation     In this tutorial, we'll walk you through the process of creating a pseudo character driver in Linux. Setting up the Project Structure Navigate…

  Dynamically allocating char device numbers     In this article, let's understand how to use alloc_chrdev_region() API to dynamically create and register a range of character device numbers. Purpose…

  A char driver, char device and char device number     In this article, we delve into the world of character drivers, device numbers, and the essential kernel APIs.…