[wdmaudiodev] Re: USB 3.0 issue when un-plug audio device

Hi, 
What USB3 Host Controller are you using?

-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Moore Zhang
Sent: Wednesday, June 27, 2012 5:54 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] USB 3.0 issue when un-plug audio device

Hi Guys:

Some days ago, I test my usb audio driver in USB3.0 and BSOD occurs when I 
un-plug device while it's still playing back. I attach windbg and set 
breakpoint in all PnP and Power events. Very strange, when issue happens, none 
of these events are hit until I stop music playing back. My audio driver is 
written with AVStream framework. 

0: kd> !drvobj myAudioDriver 0xf
Driver object (86642030) is for:
 \Driver\ myAudioDriver
Driver Extension List: (id , addr)
(aea6de96 87b47338)  
Device Object list:
86731b20  
 [16] IRP_MJ_POWER                       aea70cbc       
ks!CKsDevice::DispatchPower
 [1b] IRP_MJ_PNP                         aea6926e       
ks!CKsDevice::DispatchPnp

So I set bp in ks!CKsDevice::DispatchPower and ks!CKsDevice::DispatchPnp. Then 
reproduce this issue. Strange, both breakpoints in ks!CKsDevice::DispatchPnp 
and DispatchPower are not hit until I stop music playback. Sometimes I have 
chance to stop playing, and sometimes there is bug check hang.

This issue never happens in USB1.1 and 2.0 port. Is this a known issue, anyone 
ever met the similar issue? Any idea is appreciated! 

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