MODULE_DEVICE_TABLE Explained: Linux Driver Matching

The purpose of MODULE_DEVICE_TABLE is to define a device matching table, which specifies the list of devices supported by a driver. This table includes the vendor ID, device ID, and specific data of devices, so that the driver can identify and match with them. When the kernel loads a driver, it uses this table to determine if the driver to be loaded matches any device in the system. If a device matches any item in the table, the kernel will load the corresponding driver. This table is typically defined in the driver’s code and registered in the driver’s initialization function.