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Simple Character Device Driver Code Explanation

    First, we include the packages to be used. #include <linux/kernel.h> #include <linux/module.h> #include <linux/fs.h> #include <linux/uaccess.h> #include <asm/errno.h> #include <linux/io.h> #include <linux/of.h> #include <linux/of_device.h> linux/kernel.h shows that we are doing kernel work, and allows for the printk() command to be used, which prints messages to the kernel log. printk() is used mainly as a logging mechanism for the kernel, which logs information and gives warnings. linux/module.h shows that we are specifically working on a module with regard to kernel work. Modules are code segments that can be loaded…

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