hotplugging

I'm trying to (reversibly) disable USB HID support on a Raspbian Jessie install, kernel version 4.4.16-v7+. We need to have the Raspberry Pi in a semi-public space and display stuff on a TV, and we'd like to make it at least somewhat hard to mess with it. So far I've managed to make the usbhid module removable from the kernel via rmmod. After rmmod'ing the module, tt seems, though, that each time I plug in a USB keyboard or mouse, the device driver gets loaded back into the Kernel. Is there any way to prevent that? udev is the best and easiest way doing that, add a new rule in e.g.: /etc/udev

I am running the SPI code on the panda board and I want to know which function in the code is responsible for detecting the device when it's hot plugged. Can somebody with the background of embedded systems, Linux device drivers and/or spi please answer my question? This is the line in your code that does the magic: 1286 MODULE_DEVICE_TABLE(of, omap_mcspi_of_match); Process: 1. Driver for each device exposes its information using the API MODULE_DEVICE_TABLE . Each device has a unique vendor Id and device Id . 2. At compilation time, the build process extracts this information out of the driver

Is there some event or notification I can receive or hook each time an external LCD monitor is plugged in or unplugged from a laptop running Windows 7? The laptop detects this and switches my display to the external screen and back with certain kinds of resizing or repositioning but is this exposed by the operating system so that applications can provide a handler, attach a script, etc? If not, is there a registry setting or API I could poll from time to time? (I prefer programming C + Win32 API) UPDATE Mike's answer below, WM_DEVICECHANGE led me to RegisterDeviceNotification() , but I'm