Re: kIOReturnExclusiveAccess from USBInterfaceOpen()

• Subject: Re: kIOReturnExclusiveAccess from USBInterfaceOpen()
• From: Fernando Urbina <email@hidden>
• Date: Thu, 02 Oct 2003 15:09:53 -0600
• User-agent: Microsoft-Entourage/10.1.4.030702.0

Kris has a vendor specific device and his kext loads for the device.  I
imagine that you do a SetConfiguration() and then go looking for the desired
interface?  

I really don't have a good answer on why it would fail.  The
IOUSBInterface::open() ends up calling IOUSBInterface::handleOpen() so if
handleOpen fails, you'll get a failure.  What happens at a level 7 log?  Is
there some more info?


-- 
Fernando Urbina                            mailto:email@hidden
USB Technology Team                           work: 719.534.9387
Apple Computer, Inc.                           fax: 719.532.0981
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