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HAL master instance not loading my driver
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HAL master instance not loading my driver


  • Subject: HAL master instance not loading my driver
  • From: Fabian Renn <email@hidden>
  • Date: Fri, 5 Aug 2005 13:17:40 +0200

Hello list-members,

i've programmed an audio driver plugin for my kernel driver of a usb 2.0 audio device. The purpose for the plugin is to save some custom settings, so i can reload them once the kernel driver is loaded. In the plugin i use the kAudioHardwarePropertyProcessIsMaster key to find out if the master instance has loaded the plugin, and only then do i load and save my settings. The problem i'm having now is that the master instance doesn't always load the plugin. Furthermore i can't quite figure out when it loads it and when not. Seems kind of random to me. HALLab is telling me that there is a driver plug-in present. And programs like Audio MIDI Setup and HALLab do load the plugin ( <- but they are not masters of course ). I should add that i load my driver with kextload and kextunload ( the driver-plugin path starts like this '../../../Users/....' <- that seems to work because Audio MIDI Setupt and others do load my plugin ), and that my device is a usb device, even though i don't set the usb transport flag yet. Someone Help?!?!

Greetings

Fabian Renn

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