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Date:   Fri, 6 Mar 2020 11:59:30 +0800
From:   "james qian wang (Arm Technology China)" <james.qian.wang@arm.com>
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     Liviu Dudau <liviu.dudau@arm.com>,
        Mihail Atanassov <mihail.atanassov@arm.com>,
        Brian Starkey <brian.starkey@arm.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Nathan Chancellor <natechancellor@gmail.com>,
        "Lowry Li (Arm Technology China)" <Lowry.Li@arm.com>,
        dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        nd@arm.com
Subject: Re: drm/komeda: mark PM functions as __maybe_unused
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On Tue, Jan 07, 2020 at 10:53:19PM +0100, Arnd Bergmann wrote:
> Without this, we get a couple of warnings when CONFIG_PM
> is disabled:
> 
> drivers/gpu/drm/arm/display/komeda/komeda_drv.c:156:12: error: 'komeda_rt_pm_resume' defined but not used [-Werror=unused-function]
>  static int komeda_rt_pm_resume(struct device *dev)
>             ^~~~~~~~~~~~~~~~~~~
> drivers/gpu/drm/arm/display/komeda/komeda_drv.c:149:12: error: 'komeda_rt_pm_suspend' defined but not used [-Werror=unused-function]
>  static int komeda_rt_pm_suspend(struct device *dev)
>             ^~~~~~~~~~~~~~~~~~~~
> 
> Fixes: efb465088518 ("drm/komeda: Add runtime_pm support")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
> ---
>  drivers/gpu/drm/arm/display/komeda/komeda_drv.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
> index ea5cd1e17304..e7933930a657 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
> @@ -146,14 +146,14 @@ static const struct of_device_id komeda_of_match[] = {
>  
>  MODULE_DEVICE_TABLE(of, komeda_of_match);
>  
> -static int komeda_rt_pm_suspend(struct device *dev)
> +static int __maybe_unused komeda_rt_pm_suspend(struct device *dev)
>  {
>  	struct komeda_drv *mdrv = dev_get_drvdata(dev);
>  
>  	return komeda_dev_suspend(mdrv->mdev);
>  }
>  
> -static int komeda_rt_pm_resume(struct device *dev)
> +static int __maybe_unused komeda_rt_pm_resume(struct device *dev)
>  {
>  	struct komeda_drv *mdrv = dev_get_drvdata(dev);
>

Applied to drm-misc-fixes 9803aac7b5508718989e4cde11b854fc01037b01