linux-kernel - Re: [PATCH v2 03/14] serial: port: Introduce a common helper to read properties

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Date: Mon, 4 Mar 2024 13:09:07 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-aspeed@...ts.ozlabs.org, linux-rpi-kernel@...ts.infradead.org,
	linux-mips@...r.kernel.org, linux-tegra@...r.kernel.org,
	Jiri Slaby <jirislaby@...nel.org>, Joel Stanley <joel@....id.au>,
	Andrew Jeffery <andrew@...econstruct.com.au>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>,
	Al Cooper <alcooperx@...il.com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Paul Cercueil <paul@...pouillou.net>,
	Vladimir Zapolskiy <vz@...ia.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
	Masami Hiramatsu <mhiramat@...nel.org>
Subject: Re: [PATCH v2 03/14] serial: port: Introduce a common helper to read
 properties

On Sat, Mar 02, 2024 at 09:58:53PM +0100, Greg Kroah-Hartman wrote:
> On Mon, Feb 26, 2024 at 04:19:19PM +0200, Andy Shevchenko wrote:

..

> > + * uart_read_port_properties - read firmware properties of the given UART port
> 
> I like, but:
> 
> > + * @port: corresponding port
> > + * @use_defaults: apply defaults (when %true) or validate the values (when %false)
> 
> Using random booleans in a function is horrid.  Every time you see the
> function call, or want to call it, you need to go and look up what the
> boolean is and means.
> 
> Make 2 public functions here, one that does it with use_defaults=true
> and one =false and then have them both call this one static function,
> that way the function names themselves are easy to read and understand
> and maintain over time.

Okay! I'll redo that.

..

> > +EXPORT_SYMBOL(uart_read_port_properties);
> 
> EXPORT_SYMBOL_GPL()?  I have to ask :)

No clue, the rest in this file is EXPORT_SYMBOL, but I admit I followed the
cargo cult. I'll check the modified code and see if I may use _GPL version.

Thank you for review!

-- 
With Best Regards,
Andy Shevchenko