Bug in 1394 driver?

NTDEV
1

I’ve been trying to trace a problem in
my 1394 driver, which intermittently appears.
I get an NTSTATUS 0xc0000022, i.e.
acces denied while freeing bandwidth.
So I ran the vdev_hybrid sample and modified
it to loop several thousand times through Isoch Allocate Bandwidth
and Isoch Free Bandwidth. I’ve also noticed failures there
during free with the Error Code 5, i.e. also access denied.
I only made chnages to the Test App.

My feeling is, that there is an issue with the 1394 driver stack.

I’m using Win 7 Pro 64 bit.

Udo Lenz, CCD Videometrie

2

Have you tried using the legacy 1394 driver?

–Mark Cariddi
OSR, Open Systems Resources, Inc.

-----Original Message-----
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of xxxxx@compuserve.com
Sent: Monday, January 03, 2011 12:03 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] Bug in 1394 driver?

I’ve been trying to trace a problem in
my 1394 driver, which intermittently appears.
I get an NTSTATUS 0xc0000022, i.e.
acces denied while freeing bandwidth.
So I ran the vdev_hybrid sample and modified it to loop several thousand times through Isoch Allocate Bandwidth and Isoch Free Bandwidth. I’ve also noticed failures there during free with the Error Code 5, i.e. also access denied.
I only made chnages to the Test App.

My feeling is, that there is an issue with the 1394 driver stack.

I’m using Win 7 Pro 64 bit.

Udo Lenz, CCD Videometrie

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3

The legacy driver doesn’t show this problem.
I’d rather stay with the standard driver, though.
I’ve also tried Hotfix KB 981613. There the problem remains.

Udo Lenz, CCD Videometrie

On Mon, 3 Jan 2011 13:38:32 -0500, Mark Cariddi wrote:

>Have you tried using the legacy 1394 driver?
>
>–Mark Cariddi
>OSR, Open Systems Resources, Inc.
>
>-----Original Message-----
>From: xxxxx@lists.osr.com [mailto:xxxxx@lists.o=
>sr.com] On Behalf Of xxxxx@compuserve.com
>Sent: Monday, January 03, 2011 12:03 PM
>To: Windows System Software Devs Interest List
>Subject: [ntdev] Bug in 1394 driver?
>
>I’ve been trying to trace a problem in
>my 1394 driver, which intermittently appears.
>I get an NTSTATUS 0xc0000022, i.e.
>acces denied while freeing bandwidth.
>So I ran the vdev_hybrid sample and modified it to loop several thousand ti=
>mes through Isoch Allocate Bandwidth and Isoch Free Bandwidth. I’ve also no=
>ticed failures there during free with the Error Code 5, i.e. also access de=
>nied.
>I only made chnages to the Test App.
>
>My feeling is, that there is an issue with the 1394 driver stack.
>
>I’m using Win 7 Pro 64 bit.
>
>Udo Lenz, CCD Videometrie
>
>
>
>—
>NTDEV is sponsored by OSR
>
>For our schedule of WDF, WDM, debugging and other seminars visit:=20
>http://www.osr.com/seminars
>
>To unsubscribe, visit the List Server section of OSR Online at http://www.o=
>sronline.com/page.cfm?name=3DListServer
>

4

I’ve exactly the same problem. Get STATUS_ACCESS_DENIED on REQUEST_ISOCH_FREE_BANDWIDTH on Win 7 x64 with the new driver but not with the old driver.

Karsten Splitthof