[Letux-kernel] how to get your ttyOx back

Andreas Kemnade andreas at kemnade.info
Fri Sep 21 07:23:43 CEST 2018


On Wed, 19 Sep 2018 22:28:25 +0200
"H. Nikolaus Schaller" <hns at goldelico.com> wrote:

> Hi Andreas,
> > Am 19.09.2018 um 18:40 schrieb Andreas Kemnade <andreas at kemnade.info>:
> > 
> > Hi,
> > 
> > I am just wondering how I can get back my ttyOx (especially the gps)
> > when running kernels without our special gps driver. The reason is that
> > I want to have a clear picture about power consumption, so having
> > a userspace hack to disable gps if there is no kernel support for it
> > would be helpful for example when you want to git bisect stuff.  
> It should suffice to add a blacklist entry for the w2sg (and w2cbw for bluetooth)
> driver to /etc/modprobe.d/something.conf
well, if there is no module, I cannot blacklist that.
On a mainline kernel with letux-dtbs, I have only ttyO2 and O3.

> IMHO, in that case there is no serdev driver that hides the /dev/ttyOx.
> In the worst case you can defconfigure the SERDEV subsystem.
yes, that works.

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