Everhart,Glenn
From:	acc@wipinfo.soft.net
Sent:	Thursday, March 26, 1998 1:49 AM
To:	ntdev@atria.com
Subject:	Re:[ntdev] KeWaitForSingleObject in Dispatch Routine
>Date: Wed, 25 Mar 1998 21:13:28 -0500
>From: Doug Kehn <DougKehn@compuserve.com>
>Subject: [ntdev] KeWaitForSingleObject in Dispatch Routine
>
>I have a requirement to perform synchronous I/O in a unique way...the
>dispatch routine is not to return until the I/O operation has completed. =
>
>That is I can not return STATUS_PENDING from the dispatch routine and let=
>
>StartIo do the work.  I was thinking that I could call
>KeWaitForSingleObject (using an Event object that is contained in the
>device extension) in the dispatch routine and set the event in the
>DpcForIsr routine.  Everything executed as planned until I attempt to
>execute KeSetEvent in the DpcForIsr routine.  When this routine is called=
> I
>**blue screen** due to a page fault.
>Has anyone done something similar?  thanks...

	You need to do KeInitializeEvent() with event type "Notification 
	Event' during DriverEntry() or DriverReinitialize() (This may sound
	very preliminary , excuse me if you are already doing it).

	Regards,
		-Aniruddha
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        Aniruddha C. Chiplunkar (e-mail : acc@wipinfo.soft.net)          
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