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Re: IOServiceGetMatchingServices() doesn't find driver

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Re: IOServiceGetMatchingServices() doesn't find driver

Subject: Re: IOServiceGetMatchingServices() doesn't find driver
From: Godfrey van der Linden <email@hidden>
Date: Mon, 31 Jan 2005 15:22:08 -0800

If you use ioreg -w0. Does the device you are looking for have the "registered" flag?

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.


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  >IOServiceGetMatchingServices() doesn't find driver (From: "Brian Jorgage" <email@hidden>)




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