Re: [PATCH] serdev: Don't claim unsupported serial devices

[Hans de Goede]

Hi,

On 19-12-2019 01:37, Punit Agrawal wrote:
> Hans de Goede <hdegoede@xxxxxxxxxx> writes:
>
> > Hi,
> >
> > On 18-12-2019 07:56, Punit Agrawal wrote:
> > > Serdev sub-system claims all serial devices that are not already
> > > enumerated. As a result, no device node is created for serial port on
> > > certain boards such as the Apollo Lake based UP2. This has the
> > > unintended consequence of not being able to raise the login prompt via
> > > serial connection.
> > >
> > > Introduce a blacklist to reject devices that should not be treated as
> > > a serdev device. Add the Intel HS UART peripheral ids to the blacklist
> > > to bring back serial port on SoCs carrying them.
> > >
> > > Cc: stable@xxxxxxxxxxxxxxx
> > > Signed-off-by: Punit Agrawal <punit1.agrawal@xxxxxxxxxxxxx>
> > > Cc: Rob Herring <robh@xxxxxxxxxx>
> > > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> > > Cc: Johan Hovold <johan@xxxxxxxxxx>
> > > Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
> >
> > Thank you for addressing this long standing issue.
>
> I am surprised there hasn't been more people complaining! Maybe even on
> x86 mainline isn't that widely used on development boards.

I think it is also a case of there not being that manu x86 development
boards.

Regards,

Hans