Re: How to check if driver is in-built or module?

[juuso.alasuutari@tamperelainen.org]

Quoting Greg KH <greg@kroah.com>:

> > # Load ALSA OSS emulation sound module if not already loaded.
> > KERNEL!="snd_pcm_oss", SUBSYSTEM!="module", ACTION="add",
> RUN+="/sbin/modprobe
> > snd_pcm_oss"
> >
> > # Load real time clock module if not already loaded.
> > KERNEL!="rtc", SUBSYSTEM!="module", RUN+="/sbin/modprobe rtc"
>
> No, this kind of thing belongs in your distro's "load these modules at
> boot time" list.  Everyone has this, it's just in different locations
> (/etc/sysconfig/modules in SuSE, /etc/modules.autoload/kernel-2.6/ for
> Gentoo, etc.)
>
> Don't mess with udev rules for things like this, it's just not worth it.
> Use the infrastructure that is already present and solves this today.
>
> thanks,
>
> greg k-h
>

OK. I'm using Source Mage, and there indeed exists a file /etc/modules.

The reason I wanted a udev rule for rtc (among many) is because the udev
autoload rule isn't doing everything that hotplug was. rtc is one example of
modules that were loaded by hotplug before but not by udev now. Same goes for
the irda modules. Obviously I didn't have entries for them in /etc/modules back
then, so I am hoping to figure out why they aren't loading and if there's
anything I can do about that with udev.

Any thoughts on this?

Sincerelly,
Juuso

PS: As I really enjoy messing with udev stuff and also contribute to Source
Mage's development, I would like to know if there are any dangers in loading
these modules with udev. If so, I'll just use the approach pointed out to me.
But if it's possible to use udev, why not edit Source Mage's own udev rules to
load those modules that are all-around useful, and leave it to the user to put
others in /etc/modules?
(I have to admit that right now I don't have a clear image of which modules
really are "all-around useful", so I'm just assuming that all modules which
were loaded by hotplug are such, rtc being one example.)

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