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Date:   Mon, 31 Jul 2023 23:02:34 +0300
From:   Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Tony Lindgren <tony@atomide.com>,
        Jiri Slaby <jirislaby@kernel.org>, Dhruva Gole <d-gole@ti.com>,
        Ilpo =?iso-8859-1?Q?J=E4rvinen?= <ilpo.jarvinen@linux.intel.com>,
        John Ogness <john.ogness@linutronix.de>,
        Johan Hovold <johan@kernel.org>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org
Subject: Re: [PATCH v5 3/3] serial: core: Fix serial core controller port
 name to show controller id
Message-ID: <ZMgTWktV1pDQ+Esz@smile.fi.intel.com>
References: <20230725054216.45696-1-tony@atomide.com>
 <20230725054216.45696-4-tony@atomide.com>
 <ZL+QuHE4CztPvBxo@smile.fi.intel.com>
 <2023073158-ungraded-carefully-6af3@gregkh>
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Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo
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On Mon, Jul 31, 2023 at 05:14:15PM +0200, Greg Kroah-Hartman wrote:
> On Tue, Jul 25, 2023 at 12:07:04PM +0300, Andy Shevchenko wrote:
> > On Tue, Jul 25, 2023 at 08:42:12AM +0300, Tony Lindgren wrote:
> > > We are missing the serial core controller id for the serial core port
> > > name. Let's fix the issue for sane sysfs output, and to avoid issues
> > > addressing serial ports later on.
> > > 
> > > And as we're now showing the controller id, the "ctrl" and "port" prefix
> > > for the DEVNAME become useless, we can just drop them. Let's standardize on
> > > DEVNAME:0 for controller name, where 0 is the controller id. And
> > > DEVNAME:0.0 for port name, where 0.0 are the controller id and port id.
> > > 
> > > This makes the sysfs output nicer, on qemu for example:
> > > 
> > > $ ls /sys/bus/serial-base/devices
> > > 00:04:0         serial8250:0    serial8250:0.2
> > > 00:04:0.0       serial8250:0.1  serial8250:0.3
> > 
> > Hmm... Why 0.0 is absent for serial8250?
> > Btw, what was before this patch there?
> > And maybe ls -l will look more informative?
> > 
> > > Fixes: 84a9582fd203 ("serial: core: Start managing serial controllers to enable runtime PM")
> > > Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > > Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > > Signed-off-by: Tony Lindgren <tony@atomide.com>
> > > ---
> > > 
> > > Andy, I kept your Reviewed-by although I updated the device naming and
> > > description, does the patch still look OK to you?
> > 
> > Looks okay, but I have a question above.
> 
> Can I get an ack for this if you are ok with these fixes?

Sure,
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

-- 
With Best Regards,
Andy Shevchenko