PFNDEREFERENCEDEVICEOBJECT callback function (swenum.h)

The driver can use this routine to decrement the reference count of the PDO.

Syntax

PFNDEREFERENCEDEVICEOBJECT Pfndereferencedeviceobject;

void Pfndereferencedeviceobject(
  [in] PVOID Context
)
{...}

Parameters

[in] Context

Pointer to a device extension of the device's PDO.

Return value

None

Remarks

Minidrivers access this method through the >DereferenceDeviceObject member of the BUS_INTERFACE_REFERENCE structure.

When the PDO's reference count is 0, it becomes eligible for removal. Note that this condition does not guarantee removal.

Requirements