linux-kernel - Re: [PATCH] i2c: stm32f7: avoid ifdef CONFIG_PM

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Date:   Thu, 18 Mar 2021 14:05:31 +0100
From:   Pierre Yves MORDRET <pierre-yves.mordret@...s.st.com>
To:     Alain Volmat <alain.volmat@...s.st.com>, <wsa@...nel.org>
CC:     <alexandre.torgue@...s.st.com>, <linux-i2c@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <fabrice.gasnier@...s.st.com>
Subject: Re: [PATCH] i2c: stm32f7: avoid ifdef CONFIG_PM_SLEEP for pm
 callbacks

Hi All,

Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@...s.st.com>

Regards

On 3/12/21 12:53 PM, Alain Volmat wrote:
> Avoid CONFIG_PM preprocessor check for pm suspend/resume
> callbacks and identify the functions with __maybe_unused.
> 
> Signed-off-by: Alain Volmat <alain.volmat@...s.st.com>
> ---
>  drivers/i2c/busses/i2c-stm32f7.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c
> index c62c815b88eb..4c2f1b16c5ce 100644
> --- a/drivers/i2c/busses/i2c-stm32f7.c
> +++ b/drivers/i2c/busses/i2c-stm32f7.c
> @@ -2267,8 +2267,7 @@ static int __maybe_unused stm32f7_i2c_runtime_resume(struct device *dev)
>  	return 0;
>  }
>  
> -#ifdef CONFIG_PM_SLEEP
> -static int stm32f7_i2c_regs_backup(struct stm32f7_i2c_dev *i2c_dev)
> +static int __maybe_unused stm32f7_i2c_regs_backup(struct stm32f7_i2c_dev *i2c_dev)
>  {
>  	int ret;
>  	struct stm32f7_i2c_regs *backup_regs = &i2c_dev->backup_regs;
> @@ -2289,7 +2288,7 @@ static int stm32f7_i2c_regs_backup(struct stm32f7_i2c_dev *i2c_dev)
>  	return ret;
>  }
>  
> -static int stm32f7_i2c_regs_restore(struct stm32f7_i2c_dev *i2c_dev)
> +static int __maybe_unused stm32f7_i2c_regs_restore(struct stm32f7_i2c_dev *i2c_dev)
>  {
>  	u32 cr1;
>  	int ret;
> @@ -2320,7 +2319,7 @@ static int stm32f7_i2c_regs_restore(struct stm32f7_i2c_dev *i2c_dev)
>  	return ret;
>  }
>  
> -static int stm32f7_i2c_suspend(struct device *dev)
> +static int __maybe_unused stm32f7_i2c_suspend(struct device *dev)
>  {
>  	struct stm32f7_i2c_dev *i2c_dev = dev_get_drvdata(dev);
>  	int ret;
> @@ -2341,7 +2340,7 @@ static int stm32f7_i2c_suspend(struct device *dev)
>  	return 0;
>  }
>  
> -static int stm32f7_i2c_resume(struct device *dev)
> +static int __maybe_unused stm32f7_i2c_resume(struct device *dev)
>  {
>  	struct stm32f7_i2c_dev *i2c_dev = dev_get_drvdata(dev);
>  	int ret;
> @@ -2361,7 +2360,6 @@ static int stm32f7_i2c_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif
>  
>  static const struct dev_pm_ops stm32f7_i2c_pm_ops = {
>  	SET_RUNTIME_PM_OPS(stm32f7_i2c_runtime_suspend,
> 

-- 
--
~ Py MORDRET
--