Date: Sat, 4 Sep 2004 19:39:50 -0700 (PDT) From: ctodd@chrismiller.com To: freebsd-hackers@freebsd.org Subject: KLD and USB driver Message-ID: <Pine.BSI.4.58L.0409041924100.24206@vp4.netgate.net>
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I'm working on a usb device driver I've derived from existing drivers in sys/dev/usb (4.10-RELEASE). I can successfully load and unload the module, but the usb subsystem does not appear to see the driver. However if I compile my driver in the kernel, the usb sub system uses the driver correctly. Unfortunately this is making it time consuming to test changes to my driver code as I have to compile the kernel each time. I haven't see this used in the existing usb drivers code, but I tried using the "KLD Skeleton" from the FreeBSD Architecture Handbook. Although I see the uprintf output at the terminal when load/unloading the module, the usb subsystem does not use my driver. Like the existing usb drivers, I'm using USB_DECLARE_DRIVER and DRIVER_MODULE statements. Is the KLD DECLARE_MODULE code really necessary for this driver (doesn't USB_DECLARE_DRIVER make the driver available already)? How can I determine why the driver works when compiled in the kernel, but not when dynamically loaded? I'm able to load/unload the uhid and ugen drivers and they work as expected. Any wisdom in this area would be much appreciated. Chrishelp
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