site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com Godfrey On Jan 31, , at 14:12, Brian Jorgage wrote: I am following the example tutorial in "Writing an I/O Kit Device Driver". I create a matching dictionary via IOServiceMatching (myDriver). When I verify the contents of the dictionary the (only) key-value pair is "IOProviderClass:<myDriver>". Shouldn't the key part of this be "IOClass" rather than "IOProviderClass" ? By using IOServiceMatching() it seems I am locking myself in to using the "IOProviderClass" key. If instead I use the call IOServiceMatching("AppleUSBComposite") to find an Apple driver then IOServiceGetMatchingServices() still doesn't find anything. However I know there are instances of AppleUSBComposite which I can verify via IORegistryExplorer. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... If you use ioreg -w0. Does the device you are looking for have the "registered" flag? This email sent to site_archiver@lists.apple.com