Hi Johannes,
On Wed, Jun 12, 2013 at 01:50:16PM +0200, Johannes Berg wrote:
> Nick,
>
> > Device Drivers->Network Device Support->Wireless LAN
> >
> > <M> Intel Wireless WiFi Next Gen AGN - Wireless-N/Advanced-N/Ultimate-N (iwlwifi)
> > -M- Intel Wireless WiFi DVM Firmware support
> >
> > all is hucky dory. But if I build-in these drivers into kernel (<*>), on boot dmesg reports:
> >
> > [2.347954] iwlwifi 0000:05:00.0: request for firmware file 'iwlwifi-100-5.ucode' failed.
> > [2.351885] iwlwifi 0000:05:00.0: no suitable firmware found!
> >
> > Am I missing something here - I don't quite understand why this happens?
>
> The driver has to request firmware when the device is bound to it, so it
> can then register correctly with mac80211. Newer versions of udev don't
> respond negatively if they don't have the firmware while running from
> initrd/initramfs, and will leave the driver's request pending to be
> answered once the real filesystem is mounted. You seem to not be running
> a version of udev with this logic.
>
> To work around it, you could include the firmware in the
> initrd/initramfs.
>
> Alternatively, you could unbind/re-bind the driver after the system has
> full booted, like this:
>
> # echo 0000:05:00.0 > /sys/module/iwlwifi/drivers/pci\:iwlwifi/unbind
> # echo 0000:05:00.0 > /sys/module/iwlwifi/drivers/pci\:iwlwifi/bind
>
> This will force it to attempt to load the firmware from disk again.
Thank you very much for a comprehensive reply.
I am using Linux-Mint on this machines, so at the moment am using the 'debian fakeroot make-kpkg...' stuff, so the build is dumbed down for the user ('tis easy on my Slackware box!).
So, reading what you said, I think I will leave 'as is'.
Again, thank you for the reply, and 'sorry for the noise!'
Nick
--
Free Software Foundation Associate Member 5508
http://linicks.net/
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