76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
#include "pch.h"
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VOID
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PptUnload(
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IN PDRIVER_OBJECT DriverObject
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)
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/*++
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Routine Description:
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This routine cleans up all of the memory associated with
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any of the devices belonging to the driver. It will
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loop through the device list.
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Arguments:
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DriverObject - Supplies the driver object controlling all of the
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devices.
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Return Value:
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None.
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--*/
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{
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PDEVICE_OBJECT CurrentDevice;
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PFDO_EXTENSION Extension;
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PLIST_ENTRY Head;
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PISR_LIST_ENTRY Entry;
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CurrentDevice = DriverObject->DeviceObject;
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while( CurrentDevice ) {
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Extension = CurrentDevice->DeviceExtension;
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if (Extension->InterruptRefCount) {
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PptDisconnectInterrupt(Extension);
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}
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while (!IsListEmpty(&Extension->IsrList)) {
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Head = RemoveHeadList(&Extension->IsrList);
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Entry = CONTAINING_RECORD(Head, ISR_LIST_ENTRY, ListEntry);
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ExFreePool(Entry);
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}
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ExFreePool(Extension->DeviceName.Buffer);
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IoDeleteDevice(CurrentDevice);
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IoGetConfigurationInformation()->ParallelCount--;
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CurrentDevice = DriverObject->DeviceObject;
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}
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if( PortInfoMutex ) {
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ExFreePool( PortInfoMutex );
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PortInfoMutex = NULL;
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}
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if( PowerStateCallbackRegistration ) {
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ExUnregisterCallback( PowerStateCallbackRegistration );
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PowerStateCallbackRegistration = NULL; // probably not needed, but shouldn't hurt
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}
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if( PowerStateCallbackObject ) {
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ObDereferenceObject( PowerStateCallbackObject );
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PowerStateCallbackObject = NULL;
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}
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RtlFreeUnicodeString( &RegistryPath );
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DD(NULL,DDE,"PptUnload\n");
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}
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