Re: Device Driver Deleopment

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 01/22/04

  • Next message: Bob Pickles: "Re: Device Driver Deleopment" 
    To: Bob Pickles <bpickles@sbs.com>
Date: Thu, 22 Jan 2004 22:08:52 +0100

    In message <018b01c3e12c$042b19d0$1d02a8c0@sdlbase>, "Bob Pickles" writes:
    >Hi
    >
    >Looking for some help with FreeBSD 5.1, I am new to this but I am
    >fairly quick to learn.
    >
    >Problem that I am having, is that in my device driver, it see's my PCI card, but when
    >I call make_dev the system hangs, then resets.
    >
    >If I try to use mknod, then it fails also. Looked at the /dev mount and even devfs fails.
    >Is there some form of protection here that I don't know about?
    >How can I create a device on /dev?

    It sounds to me like you are calling make_dev() with wrong parameters,
    all our other device drivers get this to work, so I suggest finding a
    similar one and compare it to your own code. 

    -- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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