linux-kernel - Re: [PATCH 1/6] serial: 8250: remove AR7 support

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Message-ID: <ZQwl+OXvhA6/x6f1@smile.fi.intel.com>
Date:   Thu, 21 Sep 2023 14:16:08 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Philippe Mathieu-Daudé <philmd@...aro.org>
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        linux-mips@...r.kernel.org, Jonas Gorski <jonas.gorski@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH 1/6] serial: 8250: remove AR7 support

On Thu, Sep 21, 2023 at 12:36:05PM +0200, Philippe Mathieu-Daudé wrote:
> On 20/9/23 22:10, Wolfram Sang wrote:

> > --- a/include/uapi/linux/serial_core.h
> > +++ b/include/uapi/linux/serial_core.h
> > @@ -32,7 +32,6 @@
> >   #define PORT_XSCALE	15
> >   #define PORT_RM9000	16	/* PMC-Sierra RM9xxx internal UART */
> >   #define PORT_OCTEON	17	/* Cavium OCTEON internal UART */
> > -#define PORT_AR7	18	/* Texas Instruments AR7 internal UART */
> 
> I'm a bit surprised definitions are removed from the uAPI, isn't
> it expected to be very stable? Shouldn't it be better to keep it
> defined but modify the comment, mentioning "obsolete" or "deprecated"?

The numbers up to 20 must stay, they are being used somewhere, setserial
implementation in busybox (IIRC).

NAK.

-- 
With Best Regards,
Andy Shevchenko