linux-kernel - Re: [PATCH v3 00/15] gpio: Use modern PM macros

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Message-ID: <aR3n1Y6YnR_tGmrk@smile.fi.intel.com>
Date: Wed, 19 Nov 2025 17:52:53 +0200
From: Andy Shevchenko <andriy.shevchenko@...el.com>
To: Jisheng Zhang <jszhang@...nel.org>
Cc: Doug Berger <opendmb@...il.com>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	bcm-kernel-feedback-list@...adcom.com,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Hoan Tran <hoan@...amperecomputing.com>,
	Andy Shevchenko <andy@...nel.org>, Daniel Palmer <daniel@...ngy.jp>,
	Romain Perier <romain.perier@...il.com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Santosh Shilimkar <ssantosh@...nel.org>,
	Kevin Hilman <khilman@...nel.org>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Shubhrajyoti Datta <shubhrajyoti.datta@....com>,
	Srinivas Neeli <srinivas.neeli@....com>,
	Michal Simek <michal.simek@....com>, linux-gpio@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org
Subject: Re: [PATCH v3 00/15] gpio: Use modern PM macros

On Wed, Nov 19, 2025 at 10:43:12PM +0800, Jisheng Zhang wrote:
> Use the modern PM macros for the suspend and resume functions to be
> automatically dropped by the compiler when CONFIG_PM or
> CONFIG_PM_SLEEP are disabled, without having to use #ifdef guards or
> __maybe_unused.
> 
> This has the advantage of always compiling these functions in,
> independently of any Kconfig option. Thanks to that, bugs and other
> regressions are subsequently easier to catch.
> 
> Almost all drivers are converted, only gpio-tegra and gpio-mlxbf are
> left as is, because the memory for saving HW context is not trivial,
> if we convert them, then the two drivers' users may complain for
> !CONFIG_PM && !CONFIG_PM_SLEEP case. So I didn't touch them.
> 
> patch to gpio-dwapb.c is tested on real HW, others are compile-tested only.

Thanks for the changes, but...

This series still does additional things that make the memory consumption grow
for no purpose. I suggest to leave ifdeffery around members and do it in a
separate series with all reasoning and good points. With this split done, I
will immediately review and give tags for the patches as I'm totally in favour
of using pm_ptr() and pm_sleep_ptr().

-- 
With Best Regards,
Andy Shevchenko