Re: Backports not building configured drivers

[Marlon Smith <marlon.smith10@gmail.com>]

On Tue, 2018-08-28 at 07:42 +0300, Luca Coelho wrote:
> On Mon, 2018-08-27 at 15:01 -0700, Marlon Smith wrote:
> > 
> > Hi everyone,
> Hi Marlon,
> > > > 
> > I'm using backports 4.14 to build for a custom kernel 3.14.  That
> > kernel includes the RT2800 wifi driver, and if I configure
> > backports
> > with menuconfig to build a newer version of that driver it works
> > perfectly.  However, if I configure backports to build the RTL8821
> > driver, which my kernel otherwise does not include, the driver
> > never
> > gets built and backports shows it as not selected the next time I
> > run
> > menuconfig.
> > 
> > Is this expected behaviour?  Is there something I can do to force
> > this
> > driver to build?
> This probably means that your 3.14 kernel doesn't have some of the
> dependencies needed by the RTL8821 driver from 4.14.  Check the list
> of
> dependencies for the driver and make sure they are included in your
> 3.14 kernel.
> > --
> Luca.

Hey Luca, thanks for the reply!  The requirements in the backports 4.14
menuconfig are listed as follows:

Depends on: WLAN [=y] && WLAN_VENDOR_REALTEK [=y] && RTL_CARDS [=m] &&
m && BP_MODULES [=y] && PCI [=y]

I can find the symbol WLAN_VENDOR_REALTEK in the backports 4.14
menuconfig but not in the 3.14 kernel's menuconfig.  Does this mean I
can't use the driver with this kernel?
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