When my kext is installed in /System/Extensions/ it only gets
loaded at startup if the device is in a unenumerated status. If I
boot my computer and the device attached ( during startup ) is
already enumerated my driver never gets loaded, unless i disconnect
and connect the usb-cable from the computer ( sometime after boot
process ).
The issue is that your device is a composite device and so the
AppleUSBComposite driver matches to your device because it is a
"Root" driver and yours is not. (OSBundleRequired = 'Root').
Unfortunately, you cannot make your driver a Root driver because your
dependencies (IOSerialFamily) are not root. Please search the
archives, I think this was discussed last year sometime. If you are
able to look at our 2004 WWDC presentation, we also gave a technique
on how to do this. Some other developers have used a startup item
and used USBDeviceReEnumerate() to cause us to re-match drivers to
the device.
HTH,
- Fernando
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