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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Fri, 24 Feb 2023 14:57:57 -0800
Message-ID: <CAHk-=wjDFKGABDe7w-=HsiUr7f=CpbmR3bPf2UL-1dPcWRYW9g@mail.gmail.com>
Subject: Re: [GIT PULL] TTY/Serial driver updates for 6.3-rc1
To:     Al Viro <viro@zeniv.linux.org.uk>
Cc:     Greg KH <gregkh@linuxfoundation.org>,
        Tharun Kumar P <tharunkumar.pasumarthi@microchip.com>,
        Kumaravel Thiagarajan <kumaravel.thiagarajan@microchip.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Jiri Slaby <jslaby@suse.cz>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org
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On Fri, Feb 24, 2023 at 2:32 PM Al Viro <viro@zeniv.linux.org.uk> wrote:
>
> > It's probably most legacy by now - it's a long time since I saw a
> > serial port being used outside of management ports, and even those are
> > often ethernet these days.
>
> Serial console is hard to replace

Yeah, but I don't think that should make it "default on" just because
somebody picked 8250.

I may have 8250 in my old config for my own legacy reasons, that
doesn't mean that when I upgrade a kernel, it should default new
drivers to be enabled too. My old legacy 8250 history does *not*
suddenly grow new hardware.

Side note: we have *truly* legacy things like that
SERIAL_8250_DEPRECATED_OPTIONS thing, which also - for historical
reasons - is "default y".

I guess that's just another sign of the whole "this is legacy" thing.

          Linus