linux-kernel - Re: [PATCH v2] gpio: merrifield: Fix build err without CONFIG

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Date:   Fri, 12 Apr 2019 01:09:17 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Yue Haibing <yuehaibing@...wei.com>, linus.walleij@...aro.org,
        bgolaszewski@...libre.com, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH v2] gpio: merrifield: Fix build err without CONFIG_ACPI

On Friday, April 5, 2019 4:50:09 PM CEST Andy Shevchenko wrote:
> On Fri, Apr 05, 2019 at 10:21:12PM +0800, Yue Haibing wrote:
> > From: YueHaibing <yuehaibing@...wei.com>
> > 
> > When building CONFIG_ACPI is not set
> > gcc warn this:
> > 
> > drivers/gpio/gpio-merrifield.c: In function
> > mrfld_gpio_get_pinctrl_dev_name: drivers/gpio/gpio-merrifield.c:388:19:
> > error: dereferencing pointer to incomplete type struct acpi_device> 
> >    put_device(&adev->dev);
> >    
> >                    ^
> > 
> > Reported-by: Hulk Robot <hulkci@...wei.com>
> > Suggested-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> > Fixes:d00d2109c367 ("gpio: merrifield: Convert to use
> > acpi_dev_get_first_match_dev()") Signed-off-by: YueHaibing
> > <yuehaibing@...wei.com>
> 
> Thank you for an update, I have a comment below, but before sending v3, let
> Rafael to have a chance to look at it.
> 
> >  #ifdef CONFIG_ACPI
> >  extern int acpi_platform_notify(struct device *dev, enum kobject_action
> >  action);> 
> > +
> > +static inline void put_acpi_device(struct acpi_device *adev)
> > +{
> > +	put_device(&adev->dev);
> > +}
> 
> This should probably go to acpi_bus.h under acpi_dev_get_first_match_dev().
> And talking to Mika we agreed that naming would be better as acpi_dev_put().

Agreed on both accounts.

Thanks!