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Subject: Re: kldload on arm
From: Ian Lepore <ian@FreeBSD.org>
To: Tom Everett <tom@khubla.com>
In-Reply-To: <CAB3ij4BZDyyEkSdonCFxiETrMRXXNge7KxDqUk=M79XcD1g9LQ@mail.gmail.com>
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Date: Mon, 12 Aug 2013 07:06:06 -0600
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On Sun, 2013-08-11 at 15:07 -0600, Tom Everett wrote:
> Good afternoon mailing list.  I'm attempting to write my first driver.
>  I've got a very basic driver which I am attempting to load.  The source
> code is here:
> 
> https://github.com/teverett/pi-iic
> 
> When I attempt to load the driver I get this:
> 
> root@lureen:/home/tom/pi-iic/pi-iic # make install
> install -o root -g wheel -m 555   bcm2835_iic.ko /boot/kernel
> kldxref /boot/kernel
> kldxref: Skipping /boot/kernel/kernel.gz.tramp: not dynamically-linked
> root@lureen:/home/tom/pi-iic/pi-iic # make load
> /sbin/kldload -v /home/tom/pi-iic/pi-iic/bcm2835_iic.ko
> kldload: can't load /home/tom/pi-iic/pi-iic/bcm2835_iic.ko: File exists
> *** Error code 1
> 
> 
> Does kldload work properly on arm?
> 
> 

Usually "file exists" means that the driver is either already loaded, or
is compiled into the kernel.  "kldstat -v" will show the latter.  Also,
sometimes the kldload messages are not helpful, but there'll be more
info in dmesg.

-- Ian