site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com I am not writing a user client. I have specified the "IOUserClientClass:IOUSBUserClient" key-value pair in the driver's plist. I understand that this is a default class that can be used if I choose not to write my own user client. Is this correct ? Is there something else that needs to be done in order for IOKit to "find" the IOUSBUserClient class ? Brian Jorgage ----- Original Message ----- From: Godfrey van der Linden <gvdl@apple.com> Date: Thursday, February 3, 2005 1:02 am Subject: Re: IOServiceOpen( ) returns kIOReturnNoMemory

Have you written a user client yet. The NoMemory means that the system couldn't allocate the class you have defined in your drivers plist, or your nub which ever you are connecting too.

Godfrey

On Feb 2, , at 15:34, Brian Jorgage wrote:

...

I am now able to find instances of my driver via IOServiceGetMatchingServices(). Next step is to open a connection using IOServiceOpen(). However return code is kIOReturnNoMemory. I have scanned http://developer.apple.com on this but haven't found an explanation/correction for this.

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