Hiding Private Data in Embedded C Language

Hiding Private Data in Embedded C Language

[Image] Hello everyone, I am the Information Guy! In Linux driver development, have you encountered the following problem: how to save private data for different device instances? For example, a USB camera needs to store resolution parameters, and a GPIO device needs to record interrupt handler functions. Directly modifying the kernel’s struct device structure? This … Read more

Private Data Hiding in Embedded C Language

Private Data Hiding in Embedded C Language

Content In Linux driver development, have you encountered the problem of how to store private data for different device instances? For example, a USB camera needs to store resolution parameters, while a GPIO device needs to record interrupt handler functions. Directly modifying the kernel’s <span>struct device</span> structure? This would obviously break the encapsulation of the … Read more

Analyzing the Elegant C Language Functions dev_get_drvdata and dev_set_drvdata in the Linux Kernel

Analyzing the Elegant C Language Functions dev_get_drvdata and dev_set_drvdata in the Linux Kernel

Hello everyone, I am the Intelligence Guy~ In Linux driver development, have you ever encountered the problem of how to save private data for different device instances? For example, a USB camera needs to store resolution parameters, and a GPIO device needs to record interrupt handler functions. Directly modifying the <span>struct device</span> structure? This would … Read more