linux-kernel - Re: [PATCH 05/14] rtc: ds1685: use rtc_lock/rtc

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Date:   Sun, 24 Jan 2021 22:33:57 -0500
From:   Joshua Kinard <kumba@...too.org>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Alessandro Zummo <a.zummo@...ertech.it>
Cc:     linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/14] rtc: ds1685: use rtc_lock/rtc_unlock

On 1/19/2021 17:06, Alexandre Belloni wrote:
> Avoid accessing directly rtc->ops_lock and use the RTC core helpers.
> 
> Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
> ---
>  drivers/rtc/rtc-ds1685.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
> index d69c807af29b..75db7ab654a5 100644
> --- a/drivers/rtc/rtc-ds1685.c
> +++ b/drivers/rtc/rtc-ds1685.c
> @@ -658,7 +658,6 @@ ds1685_rtc_irq_handler(int irq, void *dev_id)
>  {
>  	struct platform_device *pdev = dev_id;
>  	struct ds1685_priv *rtc = platform_get_drvdata(pdev);
> -	struct mutex *rtc_mutex;
>  	u8 ctrlb, ctrlc;
>  	unsigned long events = 0;
>  	u8 num_irqs = 0;
> @@ -667,8 +666,7 @@ ds1685_rtc_irq_handler(int irq, void *dev_id)
>  	if (unlikely(!rtc))
>  		return IRQ_HANDLED;
>  
> -	rtc_mutex = &rtc->dev->ops_lock;
> -	mutex_lock(rtc_mutex);
> +	rtc_lock(rtc->dev);
>  
>  	/* Ctrlb holds the interrupt-enable bits and ctrlc the flag bits. */
>  	ctrlb = rtc->read(rtc, RTC_CTRL_B);
> @@ -713,7 +711,7 @@ ds1685_rtc_irq_handler(int irq, void *dev_id)
>  		}
>  	}
>  	rtc_update_irq(rtc->dev, num_irqs, events);
> -	mutex_unlock(rtc_mutex);
> +	rtc_unlock(rtc->dev);
>  
>  	return events ? IRQ_HANDLED : IRQ_NONE;
>  }
> 

Acked-by: Joshua Kinard <kumba@...too.org>