Plug and Play Flashcards
1
Q
Plug and Play requests play two roles in the WDM
A
In their first role, these requests instruct the driver when and how to configure or deconfigure itself and the hardware. A second and more complicated purpose of PnP requests is to guide the driver through a series of state transitions
2
Q
two fundamental states of the device
A
WORKING and STOPPED are the two fundamental states of the device. The STOPPED state is the initial state of a device immediately after you create the device object. The WORKING state indicates that the device is fully operational.
3
Q
All the parameters for the IRP, including the all-important minor function code, are in…
A
the stack location. Hence, we obtain a pointer to the stack location by calling IoGetCurrentIrpStackLocation.
