Fw: Regression: bcm4312 lp-phy device not recognized in 4.15 kernel

Fw: Regression: bcm4312 lp-phy device not recognized in 4.15 kernel

[Chris Vine]

I probably should have copied this to the relevant kernel wireless
mailing lists.  Anyway, here it is.

As a further datum point, the b43 driver works fine with the 4.15.0-rc3
kernel.  So something seems to have changed between that and 4.15.0.

Chris

Begin forwarded message:

Date: Mon, 29 Jan 2018 23:37:49 +0000
From: Chris Vine <vine35792468@gmail.com>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Regression: bcm4312 lp-phy device not recognized in 4.15 kernel


I have an old netbook with a Broadcom bcm4312 802.11b/g lp-phy
[14e4:4315] (rev 01) wifi device.  It is no longer recognized in kernel
4.15: it works fine with the 4.14 kernel and earlier, with the b43 and
ssb kernel modules.

I cannot give any further information as there are no error messages
logged. The b43 firmware (wl-5.100.138) is not loaded for it, nor are
the ssb/b43/bcma/ mmc_core/mac80211/cfg80211 modules.  The modules can
be loaded by hand without error, but nothing happens and no network
interface is presented.

This is a pretty slow and rubbish netbook but is useful when travelling
to a country which might impound your laptop (no names) and you don't
mind too much losing it.  It would be nice to continue to be able to
use it for that.

Chris

Fw: Regression: bcm4312 lp-phy device not recognized in 4.15 kernel

[Florian Fainelli]

On 02/04/2018 10:58 AM, Chris Vine wrote:
> I probably should have copied this to the relevant kernel wireless
> mailing lists.  Anyway, here it is.
> 
> As a further datum point, the b43 driver works fine with the 4.15.0-rc3
> kernel.  So something seems to have changed between that and 4.15.0.

Does this patch help?

https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers.git/commit/?id=a9e6d44ddeccd3522670e641f1ed9b068e746ff7

> 
> Chris
> 
> Begin forwarded message:
> 
> Date: Mon, 29 Jan 2018 23:37:49 +0000
> From: Chris Vine <vine35792468@gmail.com>
> To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
> Subject: Regression: bcm4312 lp-phy device not recognized in 4.15 kernel
> 
> 
> I have an old netbook with a Broadcom bcm4312 802.11b/g lp-phy
> [14e4:4315] (rev 01) wifi device.  It is no longer recognized in kernel
> 4.15: it works fine with the 4.14 kernel and earlier, with the b43 and
> ssb kernel modules.
> 
> I cannot give any further information as there are no error messages
> logged. The b43 firmware (wl-5.100.138) is not loaded for it, nor are
> the ssb/b43/bcma/ mmc_core/mac80211/cfg80211 modules.  The modules can
> be loaded by hand without error, but nothing happens and no network
> interface is presented.
> 
> This is a pretty slow and rubbish netbook but is useful when travelling
> to a country which might impound your laptop (no names) and you don't
> mind too much losing it.  It would be nice to continue to be able to
> use it for that.
> 
> Chris
> 

-- 
Florian

Regression: bcm4312 lp-phy device not recognized in 4.15 kernel

[Chris Vine]

On Sun, 4 Feb 2018 12:03:49 -0800
Florian Fainelli <f.fainelli@gmail.com> wrote:
> On 02/04/2018 10:58 AM, Chris Vine wrote:
> > I probably should have copied this to the relevant kernel wireless
> > mailing lists.  Anyway, here it is.
> > 
> > As a further datum point, the b43 driver works fine with the
> > 4.15.0-rc3 kernel.  So something seems to have changed between that
> > and 4.15.0.
> 
> Does this patch help?
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers.git/commit/?id=a9e6d44ddeccd3522670e641f1ed9b068e746ff7

Yes, I have wireless working again.

I'll recompile tomorrow from a fresh kernel tree and apply the patch
again and make sure it still works.  I will let you know.

-----------------------------------------
> > 
> > Begin forwarded message:
> > 
> > Date: Mon, 29 Jan 2018 23:37:49 +0000
> > From: Chris Vine <vine35792468@gmail.com>
> > To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
> > Subject: Regression: bcm4312 lp-phy device not recognized in 4.15
> > kernel
> > 
> > 
> > I have an old netbook with a Broadcom bcm4312 802.11b/g lp-phy
> > [14e4:4315] (rev 01) wifi device.  It is no longer recognized in
> > kernel 4.15: it works fine with the 4.14 kernel and earlier, with
> > the b43 and ssb kernel modules.
> > 
> > I cannot give any further information as there are no error messages
> > logged. The b43 firmware (wl-5.100.138) is not loaded for it, nor
> > are the ssb/b43/bcma/ mmc_core/mac80211/cfg80211 modules.  The
> > modules can be loaded by hand without error, but nothing happens
> > and no network interface is presented.
> > 
> > This is a pretty slow and rubbish netbook but is useful when
> > travelling to a country which might impound your laptop (no names)
> > and you don't mind too much losing it.  It would be nice to
> > continue to be able to use it for that.
> > 
> > Chris
> > 

Regression: bcm4312 lp-phy device not recognized in 4.15 kernel

[Chris Vine]

On Sun, 4 Feb 2018 22:00:32 +0000
Chris Vine <vine35792468@gmail.com> wrote:
> On Sun, 4 Feb 2018 12:03:49 -0800
> Florian Fainelli <f.fainelli@gmail.com> wrote:
> > On 02/04/2018 10:58 AM, Chris Vine wrote:  
> > > I probably should have copied this to the relevant kernel wireless
> > > mailing lists.  Anyway, here it is.
> > > 
> > > As a further datum point, the b43 driver works fine with the
> > > 4.15.0-rc3 kernel.  So something seems to have changed between
> > > that and 4.15.0.  
> > 
> > Does this patch help?
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers.git/commit/?id=a9e6d44ddeccd3522670e641f1ed9b068e746ff7  
> 
> Yes, I have wireless working again.
> 
> I'll recompile tomorrow from a fresh kernel tree and apply the patch
> again and make sure it still works.  I will let you know.

I can confirm that when the kernel is built with that configuration
patch my bcm4312 device works OK again.

Chris

> -----------------------------------------
> > > 
> > > Begin forwarded message:
> > > 
> > > Date: Mon, 29 Jan 2018 23:37:49 +0000
> > > From: Chris Vine <vine35792468@gmail.com>
> > > To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
> > > Subject: Regression: bcm4312 lp-phy device not recognized in 4.15
> > > kernel
> > > 
> > > 
> > > I have an old netbook with a Broadcom bcm4312 802.11b/g lp-phy
> > > [14e4:4315] (rev 01) wifi device.  It is no longer recognized in
> > > kernel 4.15: it works fine with the 4.14 kernel and earlier, with
> > > the b43 and ssb kernel modules.
> > > 
> > > I cannot give any further information as there are no error
> > > messages logged. The b43 firmware (wl-5.100.138) is not loaded
> > > for it, nor are the ssb/b43/bcma/ mmc_core/mac80211/cfg80211
> > > modules.  The modules can be loaded by hand without error, but
> > > nothing happens and no network interface is presented.
> > > 
> > > This is a pretty slow and rubbish netbook but is useful when
> > > travelling to a country which might impound your laptop (no names)
> > > and you don't mind too much losing it.  It would be nice to
> > > continue to be able to use it for that.
> > > 
> > > Chris
> > >   
> 
>