1394 Windows 7 - REQUEST_ISOCH_ATTACH_BUFFERS return STATUS_INSUFFICIENT_RESOURCES

NTDEV
1

Hi!

I currently work to get working our 1394 driver under Windows 7 using
the new 1394ohci.sys driver.
I get an error in our driver because we try to do
REQUEST_ISOCH_ATTACH_BUFFERS and we get status
STATUS_INSUFFICIENT_RESOURCES from MS driver.
The first three call to REQUEST_ISOCH_ATTACH_BUFFERS return success but
the fourth failed.

Our driver work well under previous version of windows and with the 1394
legacy driver ship with Windows 7.

I generated *.etl trace file (like Don Miller from Microsoft suggest in
previous discussion
http://www.osronline.com/ShowThread.cfm?link=166737), but I cannot open
this file using traceview.exe ship within the DDK and the 1394ohci.PDB
in MS symstore.

Any clue?

Thank you!

Michel Archambault, ing. M.Sc.A.

2

Nobody can help with this one?

Thank you!

3

Hi Michel,

Can you send the .etl file to my email address: donmil at microsoft.com?

Thanks,

-Don

4

OK,

I get more info, while running our driver under Windows 7 Checked build.
I get :
*** Assertion failed: 0
*** Source File: d:\w7rtm\drivers\wdm\1394\1394ohci\ioworkers.hpp, line 509

–
Michel Archambault

5

Ok,

We fixed the problem.
We just set the wrong value for nNumberOfBuffers in REQUEST_ISOCH_ALLOCATE_RESOURCES.
We set this value to 5 (4 + 1, one extra ref. msdn doc.)
We call 4 times REQUEST_ISOCH_ATTACH_BUFFERS but with nNumberOfDescriptors set to 2 each time (since last february).
So we need to set nNumberOfBuffers to 9 (4*2 + 1) instead.

We never get the status STATUS_INSUFFICIENT_RESOURCES with the legacy driver.
It’s strange!

Anyway! One more bug fixed :slight_smile:

Have a nice day!

Thanks to Don Miller for is help.

–
Michel Archambault