Date: Sat, 12 Jun 2004 15:36:33 -0400 From: Eric Jacobs <eaja@erols.com> To: freebsd-hackers@freebsd.org Subject: Re: lpt module Message-ID: <20040612153633.315938cf.eaja@erols.com> In-Reply-To: <20040612184617.65b746f4.sebastian.ssmoller@gmx.net> References: <20040612184617.65b746f4.sebastian.ssmoller@gmx.net>
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On Sat, 12 Jun 2004 18:46:17 +0200 sebastian ssmoller <sebastian.ssmoller@gmx.net> wrote: > > so i decided to play around a bit with the lpt module. first thing i > noticed when compiled lpt as module is: i cannot unload it (kldunload > says: device not configured). somewhere in the net i read that this is > an expected behaviour (as it is for usb afaik) because lpt module does > not release memory properly (?) The lpt driver needs a device_detach method in sys/ppbus/lpt.c. Might want to look at sio_detach in sio for hints. It will need to ensure that the device is closed, release bus resources, and destroy its cdevs, and possibly some other non-obvious things (haven't looked closely)
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