Re: [cfg80211 / iwlwifi] setting wireless regulatory domain doesn'twork.

From: Ben Hutchings
Date: Tue Dec 17 2013 - 16:27:25 EST


On Tue, Dec 17, 2013 at 09:33:19PM +0100, Sander Eikelenboom wrote:
[...]
> > It's the official Debian package.
[...]
> > I will report back when i have tested converting the wireless stuff to loadable modules / seeing if i can put the CRDA stuff in initrd.
>
> With all the wireless stuff switched to loadable modules it *does* work.
>
> So the problem is that:
> The current code blocks all future regulatory domain setting attempts forever (till the next reboot)
> when it can't find the CRDA. This can and does happen when the modules are compiled in and the CRDA is not in initrd.
>
> So from the question department:
>
> A) Why doesn't the code timeout the processing of a regulatory domain hint and remove the pending request when it aborts ?
> B) Why isn't the CRDA treated as firmware and placed in /lib/firmware, which has a much greater chance of automagically appearing in initrd ?
[...]

It doesn't make any logical sense to put a userland program in
/lib/firmware, and it wouldn't have any effect on the initramfs
builders I'm familiar with (which look at module metadata to work
out which files to include from /lib/firmware).

Debian official kernels use modular drivers, and neither
initramfs-tools nor dracut includes wireless drivers in the initramfs.
If you build a custom kernel with built-in drivers then you most
likely don't need an initramfs at all.

As maintainer of crda in Debian, I could add an initramfs hook that
would include it in an initramfs. But I don't understand why it would
be worth doing so. Why is it so useful to have wireless drivers
built-in *and* an initramfs? If you think I should do this then open
a bug (reportbug crda).

Ben.

--
Ben Hutchings
Life would be so much easier if we could look at the source code.
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