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[NTOSKRNL]

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- Dereference the correct device object (the one who asked for shutdown notification) instead of whatever happens to be on the top of the device stack
- Fix flag issues

svn path=/trunk/; revision=56087
This commit is contained in:
Cameron Gutman 2012-03-08 02:43:47 +00:00
parent f3bea9c548
commit 592be28128
1 changed files with 13 additions and 7 deletions
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20
reactos/ntoskrnl/io/iomgr/device.c
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@ -174,9 +174,12 @@ IoShutdownSystem(IN ULONG Phase)
KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
}
/* Remove the flag */
ShutdownEntry->DeviceObject->Flags &= ~DO_SHUTDOWN_REGISTERED;
/* Get rid of our reference to it */
ObDereferenceObject(DeviceObject);
ObDereferenceObject(ShutdownEntry->DeviceObject);
/* Free the shutdown entry and reset the event */
ExFreePoolWithTag(ShutdownEntry, TAG_SHUTDOWN_ENTRY);
KeClearEvent(&Event);
@ -228,9 +231,12 @@ IoShutdownSystem(IN ULONG Phase)
KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
}
/* Remove the flag */
ShutdownEntry->DeviceObject->Flags &= ~DO_SHUTDOWN_REGISTERED;
/* Get rid of our reference to it */
ObDereferenceObject(DeviceObject);
ObDereferenceObject(ShutdownEntry->DeviceObject);
/* Free the shutdown entry and reset the event */
ExFreePoolWithTag(ShutdownEntry, TAG_SHUTDOWN_ENTRY);
KeClearEvent(&Event);
@ -1485,6 +1491,9 @@ IoUnregisterShutdownNotification(PDEVICE_OBJECT DeviceObject)
PSHUTDOWN_ENTRY ShutdownEntry;
PLIST_ENTRY NextEntry;
KIRQL OldIrql;
/* Remove the flag */
DeviceObject->Flags &= ~DO_SHUTDOWN_REGISTERED;
/* Acquire the shutdown lock and loop the shutdown list */
KeAcquireSpinLock(&ShutdownListLock, &OldIrql);
@ -1543,9 +1552,6 @@ IoUnregisterShutdownNotification(PDEVICE_OBJECT DeviceObject)
/* Release the shutdown lock */
KeReleaseSpinLock(&ShutdownListLock, OldIrql);
/* Now remove the flag */
DeviceObject->Flags &= ~DO_SHUTDOWN_REGISTERED;
}
/*