linux-kernel - Re: [PATCH v3 05/15] gpio: pxa: Use modern PM macros

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Message-ID: <aR3mnWQedt7SMRP0@smile.fi.intel.com>
Date: Wed, 19 Nov 2025 17:47:41 +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 05/15] gpio: pxa: Use modern PM macros

On Wed, Nov 19, 2025 at 10:43:17PM +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.
> 
> 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.

...

> struct pxa_gpio_bank {

...

>  	unsigned long	irq_mask;
>  	unsigned long	irq_edge_rise;
>  	unsigned long	irq_edge_fall;

> -

As I already pointed out this is stray change. Why you ignored my comment?

> -#ifdef CONFIG_PM
>  	unsigned long	saved_gplr;
>  	unsigned long	saved_gpdr;
>  	unsigned long	saved_grer;
>  	unsigned long	saved_gfer;
> -#endif

Same Q as per dwapb driver. The CONFIG_PM=n doesn't need these.

>  };

...

>  static struct syscore_ops pxa_gpio_syscore_ops = {
> -	.suspend	= pxa_gpio_suspend,
> -	.resume		= pxa_gpio_resume,
> +	.suspend	= pm_ptr(pxa_gpio_suspend),
> +	.resume		= pm_ptr(pxa_gpio_resume),
>  };

This is not a device PM ops actually. Is there any guarantees on the
relationship with CONFIG_PM and these callbacks? If so, I think we
need to have special macros somewhere in include/linux/syscore_ops.h.

Otherwise I'm not sure this will be a good patch at all.

-- 
With Best Regards,
Andy Shevchenko