linux-kernel - Re: [PATCH v2] tty: serial: ip22zilog: Use platform device for probing

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Message-ID: <alpine.DEB.2.21.2508011536550.5060@angie.orcam.me.uk>
Date: Fri, 1 Aug 2025 15:38:57 +0100 (BST)
From: "Maciej W. Rozycki" <macro@...am.me.uk>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
    Jiri Slaby <jirislaby@...nel.org>, linux-mips@...r.kernel.org, 
    linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH v2] tty: serial: ip22zilog: Use platform device for
 probing

On Fri, 25 Jul 2025, Thomas Bogendoerfer wrote:

> After commit 84a9582fd203 ("serial: core: Start managing serial controllers
> to enable runtime PM") serial drivers need to provide a device in
> struct uart_port.dev otherwise an oops happens. To fix this issue
> for ip22zilog driver switch driver to a platform driver and setup
> the serial device in sgi-ip22 code.
> 
> Signed-off-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> ---

 Shouldn't this be backported as a fatal regression?

  Maciej