linux-kernel - Re: [PATCH 14/20] usb/phy: mxs-usb: Use pm

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Date:   Sat, 5 Sep 2020 00:08:20 +0000
From:   Peter Chen <peter.chen@....com>
To:     Paul Cercueil <paul@...pouillou.net>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Cristian Birsan <cristian.birsan@...rochip.com>,
        Felipe Balbi <balbi@...nel.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Avi Fishman <avifishman70@...il.com>,
        Tomer Maimon <tmaimon77@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        Benjamin Fair <benjaminfair@...gle.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Tony Prisk <linux@...sktech.co.nz>, Bin Liu <b-liu@...com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "openbmc@...ts.ozlabs.org" <openbmc@...ts.ozlabs.org>
Subject: Re: [PATCH 14/20] usb/phy: mxs-usb: Use pm_ptr() macro

On 20-09-03 13:25:48, Paul Cercueil wrote:
> Use the newly introduced pm_ptr() macro, and mark the suspend/resume
> functions __maybe_unused. These functions can then be moved outside the
> CONFIG_PM_SUSPEND block, and the compiler can then process them and
> detect build failures independently of the config. If unused, they will
> simply be discarded by the compiler.
> 
> Signed-off-by: Paul Cercueil <paul@...pouillou.net>
> ---
>  drivers/usb/phy/phy-mxs-usb.c | 11 +++++------
>  1 file changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
> index 67b39dc62b37..c5e32d51563f 100644
> --- a/drivers/usb/phy/phy-mxs-usb.c
> +++ b/drivers/usb/phy/phy-mxs-usb.c
> @@ -815,8 +815,8 @@ static int mxs_phy_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -#ifdef CONFIG_PM_SLEEP
> -static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on)
> +static void __maybe_unused
> +mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on)
>  {
>  	unsigned int reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR;
>  
> @@ -832,7 +832,7 @@ static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on)
>  			reg, BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL);
>  }
>  
> -static int mxs_phy_system_suspend(struct device *dev)
> +static int __maybe_unused mxs_phy_system_suspend(struct device *dev)
>  {
>  	struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
>  
> @@ -842,7 +842,7 @@ static int mxs_phy_system_suspend(struct device *dev)
>  	return 0;
>  }
>  
> -static int mxs_phy_system_resume(struct device *dev)
> +static int __maybe_unused mxs_phy_system_resume(struct device *dev)
>  {
>  	struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
>  
> @@ -851,7 +851,6 @@ static int mxs_phy_system_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif /* CONFIG_PM_SLEEP */
>  
>  static SIMPLE_DEV_PM_OPS(mxs_phy_pm, mxs_phy_system_suspend,
>  		mxs_phy_system_resume);
> @@ -862,7 +861,7 @@ static struct platform_driver mxs_phy_driver = {
>  	.driver = {
>  		.name = DRIVER_NAME,
>  		.of_match_table = mxs_phy_dt_ids,
> -		.pm = &mxs_phy_pm,
> +		.pm = pm_ptr(&mxs_phy_pm),
>  	 },
>  };
>  
> -- 

Acked-by: Peter Chen <peter.chen@....com>

-- 

Thanks,
Peter Chen