Re: [pdx86-platform-drivers-x86:review-hans 59/65] drivers/platform/x86/toshiba_acpi.c:2937:9: warning: no previous prototype for 'toshiba_acpi_hwmon_is_visible'

[Arvid Norlander]

Hi,

On 2022-09-09 21:19, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git review-hans
> head:   79e8f8235a1686d0656b60cf72f7fda5530ee1cf
> commit: b5f3665e82591d465357f4a69196f46b3d30e997 [59/65] platform/x86: toshiba_acpi: Add fan RPM reading (hwmon interface)
> config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220910/202209100300.LjCie4bn-lkp@xxxxxxxxx/config)
> compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
> reproduce (this is a W=1 build):
>         # https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/commit/?id=b5f3665e82591d465357f4a69196f46b3d30e997
>         git remote add pdx86-platform-drivers-x86 https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
>         git fetch --no-tags pdx86-platform-drivers-x86 review-hans
>         git checkout b5f3665e82591d465357f4a69196f46b3d30e997
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/platform/
> 
> If you fix the issue, kindly add following tag where applicable
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> 
> All warnings (new ones prefixed by >>):
> 
>>> drivers/platform/x86/toshiba_acpi.c:2937:9: warning: no previous prototype for 'toshiba_acpi_hwmon_is_visible' [-Wmissing-prototypes]
>     2937 | umode_t toshiba_acpi_hwmon_is_visible(const void *drvdata,
>          |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> drivers/platform/x86/toshiba_acpi.c:2944:5: warning: no previous prototype for 'toshiba_acpi_hwmon_read' [-Wmissing-prototypes]
>     2944 | int toshiba_acpi_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
>          |     ^~~~~~~~~~~~~~~~~~~~~~~
> 
> 
> vim +/toshiba_acpi_hwmon_is_visible +2937 drivers/platform/x86/toshiba_acpi.c
> 
>   2934	
>   2935	/* HWMON support for fan */
>   2936	#if IS_ENABLED(CONFIG_HWMON)
>> 2937	umode_t toshiba_acpi_hwmon_is_visible(const void *drvdata,
>   2938					      enum hwmon_sensor_types type,
>   2939					      u32 attr, int channel)
>   2940	{
>   2941		return 0444;
>   2942	}
>   2943	
>> 2944	int toshiba_acpi_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
>   2945				    u32 attr, int channel, long *val)

Oops, clearly these are missing "static". Hans de Goede: Can you apply that
fix locally easily, or should I send a patch? I must have forgotten to
build with W=1.

>   2946	{
>   2947		/*
>   2948		 * There is only a single channel and single attribute (for the
>   2949		 * fan) at this point.
>   2950		 * This can be replaced with more advanced logic in the future,
>   2951		 * should the need arise.
>   2952		 */
>   2953		if (type == hwmon_fan && channel == 0 && attr == hwmon_fan_input) {
>   2954			u32 value;
>   2955			int ret;
>   2956	
>   2957			ret = get_fan_rpm(toshiba_acpi, &value);
>   2958			if (ret)
>   2959				return ret;
>   2960	
>   2961			*val = value;
>   2962			return 0;
>   2963		}
>   2964		return -EOPNOTSUPP;
>   2965	}
>   2966	
> 

Best regards,
Arvid Norlander