Re: wl1271 NVS file loading

Re: wl1271 NVS file loading

[Ben Gamari]

Ben Gamari <bgamari.foss@gmail.com> writes:

> Hello all,
>
> I'm running a PandaBoard with Linaro 12.03 and a patched 3.3
> kernel. While wl1271 works perfectly with the Linaro kernel, it fails to
> load in the case of my patched kernel with,
>
>      wl12xx: ERROR could not get nvs file ti-connectivity/wl1271-nvs.bin: -2
>
> What is even more perplexing is the fact that the file in question
> clearly exists,
>
>         $ ls /lib/firmware/ti-connectivity/*-nvs.bin -l
>         -rw-r--r-- 1 root root  912 2012-03-24 16:28 /lib/firmware/ti-connectivity/wl1271-nvs.bin
>         -rw-r--r-- 1 root root  912 2012-03-24 16:28 /lib/firmware/ti-connectivity/wl127x-nvs.bin
>         -rw-r--r-- 1 root root 1113 2012-03-24 16:28 /lib/firmware/ti-connectivity/wl128x-nvs.bin
>         lrwxrwxrwx 1 root root   14 2012-01-24 13:10 /lib/firmware/ti-connectivity/wl12xx-nvs.bin -> wl127x-nvs.bin
>
> It seems that there is no easy way to troubleshoot udev's
> /lib/udev/firmware script, so I have really no way of tracking this down
> any further. Any ideas what might be going on here?
>
It turns out I had neglected to compile wl1271 as a module and the
firmware hadn't made it into the initrd.  I apologize for the noise.

Cheers,

- Ben

Re: wl1271 NVS file loading

[Luciano Coelho]

Hi Ben,


On Sun, 2012-04-01 at 20:10 -0400, Ben Gamari wrote: 
> Ben Gamari <bgamari.foss@gmail.com> writes:
> > I'm running a PandaBoard with Linaro 12.03 and a patched 3.3
> > kernel. While wl1271 works perfectly with the Linaro kernel, it fails to
> > load in the case of my patched kernel with,
> >
> >      wl12xx: ERROR could not get nvs file ti-connectivity/wl1271-nvs.bin: -2
> >
> > What is even more perplexing is the fact that the file in question
> > clearly exists,
> >
> >         $ ls /lib/firmware/ti-connectivity/*-nvs.bin -l
> >         -rw-r--r-- 1 root root  912 2012-03-24 16:28 /lib/firmware/ti-connectivity/wl1271-nvs.bin
> >         -rw-r--r-- 1 root root  912 2012-03-24 16:28 /lib/firmware/ti-connectivity/wl127x-nvs.bin
> >         -rw-r--r-- 1 root root 1113 2012-03-24 16:28 /lib/firmware/ti-connectivity/wl128x-nvs.bin
> >         lrwxrwxrwx 1 root root   14 2012-01-24 13:10 /lib/firmware/ti-connectivity/wl12xx-nvs.bin -> wl127x-nvs.bin
> >
> > It seems that there is no easy way to troubleshoot udev's
> > /lib/udev/firmware script, so I have really no way of tracking this down
> > any further. Any ideas what might be going on here?
> >
> It turns out I had neglected to compile wl1271 as a module and the
> firmware hadn't made it into the initrd.  I apologize for the noise.

I'm glad you managed to work around this bug.  We need to fix this
according to some recent changes in the udev code.  The change should be
simple and we just need to wait until the firmware is available if we
try to load it and it's not ready yet.

This fix will be queued up for 3.5.

-- 
Cheers,
Luca.

Re: wl1271 NVS file loading

[Ben Gamari]

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ravichandra bangalore <ravichandra.bangalore@gmail.com> writes:

> Hi
>
Moving to linux-wireless@ and including Luciano Coelho who replied to my
original request. It's often best to reply to the original thread (or at
least include the original list) in these cases so others might benefit
From the resulting discussion.

> This is related to your posting on "wl1271 NVS file loading" in forum
> linux-wireless@vger.kernel.org
>
> We are facing same issue while loading wl12xx.ko
> wl12xx: ERROR could not get nvs file ti-connectivity/wl1271-nvs.bin: -2
> Can you please let us know how do you fix this issue.
>
> How to compile "wl1271 as a module"
>
I suspect the bug that brought about the need for wl1271 to be a module
is probably fixed by now (assuming your kernel is newer than
3.5). Luciano might be able to confirm this.

If this is the case, you may want to verify that
/lib/firmware/ti-connectivity/wl1271-nvs.bin exists. If it does not, you
simply need to install the firmware by whatever means your distribution
provides (e.g. Debian/Ubuntu's `linux-firmware` package).

Otherwise, you can try compiling as a module. You can do this by either
editing `.config` or using the `make menuconfig` command. There are
numerous guides describing this to be found online. The relevant
confirmation symbol is `CONFIG_WL12XX`, if I recall correctly.

Cheers,

- Ben


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