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Date: Thu, 28 Mar 2024 16:03:10 +0530
From: Dhruva Gole <d-gole@ti.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: Tony Lindgren <tony@atomide.com>, Jiri Slaby <jirislaby@kernel.org>,
        Jonathan Corbet <corbet@lwn.net>, Petr Mladek <pmladek@suse.com>,
        Steven
 Rostedt <rostedt@goodmis.org>,
        John Ogness <john.ogness@linutronix.de>,
        Sergey Senozhatsky <senozhatsky@chromium.org>,
        "David S . Miller"
	<davem@davemloft.net>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Ilpo =?utf-8?B?SsOkcnZpbmVu?= <ilpo.jarvinen@linux.intel.com>,
        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>, Sebastian Reichel <sre@kernel.org>,
        <linux-doc@vger.kernel.org>
Subject: Re: [PATCH v7 4/7] serial: core: Add support for DEVNAME:0.0 style
 naming for kernel console
Message-ID: <20240328103310.hd4z2bt6cvje5hbo@dhruva>
References: <20240327110021.59793-1-tony@atomide.com>
 <20240327110021.59793-5-tony@atomide.com>
 <20240328063152.bjkdtdsu42cqbgf3@dhruva>
 <2024032859-subscript-marshy-7508@gregkh>
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In-Reply-To: <2024032859-subscript-marshy-7508@gregkh>

On Mar 28, 2024 at 08:22:26 +0100, Greg Kroah-Hartman wrote:
> On Thu, Mar 28, 2024 at 12:01:52PM +0530, Dhruva Gole wrote:
> > Hi,
> > 
> > On Mar 27, 2024 at 12:59:38 +0200, Tony Lindgren wrote:
> > > We can now add hardware based addressing for serial ports. Starting with
> > > commit 84a9582fd203 ("serial: core: Start managing serial controllers to
> > > enable runtime PM"), and all the related fixes to this commit, the serial
> > > core now knows to which serial port controller the ports are connected.
[...]
> > >  
> > > +#ifdef CONFIG_SERIAL_CORE_CONSOLE
> > > +
> > > +static int serial_base_add_one_prefcon(const char *match, const char *dev_name,
> > > +				       int port_id)
> > > +{
> > > +	int ret;
> > > +
> > > +	ret = add_preferred_console_match(match, dev_name, port_id);
> > > +	if (ret == -ENOENT)
> > > +		return 0;
> > > +
> > > +	return ret;
> > 
> > Can we do this instead?
> > return (ret == -ENOENT ? 0 : ret);
> 
> No, please no.
> 
> Just spell it out, like was done here, dealing with ? : is a pain to
> read and follow and the generated code should be identical.
> 
> Only use ? : in places where it's the only way to do it (i.e. as
> function parameters or in printk-like lines.)
> 
> Write for people first, compilers second.

Okay understood, I will keep this in mind from now on.
Thanks.

Tony,
Please feel free to take my R-by and ignore this suggestion as per
Greg's comments.

-- 
Best regards,
Dhruva