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BUS_RESCAN — rescan a bus checking for devices that have been added or removed
#include <sys/param.h> #include <sys/bus.h> void BUS_RESCAN(device_t dev);
The BUS_RESCAN() method is called to request a rescan of the child devices on a bus device. The method should add any devices that have been added since the previous scan and remove devices that have been removed. This method is not required to re-examine existing devices to determine if their properties have changed. This method is also not required to propagate the rescan request to child devices.