diff mbox series

rtc: pm8xxx: clear alarm register when alarm is not enabled

Message ID APoAZgAaCEiRpKG6PlzreaqE.1.1584791417367.Hmail.hankecai@vivo.com
State Accepted
Headers show
Series rtc: pm8xxx: clear alarm register when alarm is not enabled | expand

Commit Message

韩科才 March 21, 2020, 11:50 a.m. UTC
Clear alarm register when alarm is not enabled otherwise the consumer
may still start alarm timer if it find the alarm register is not zero.

Signed-off-by: hankecai <hankecai@vivo.com>
---
 drivers/rtc/rtc-pm8xxx.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

Comments

Alexandre Belloni March 21, 2020, 1:21 p.m. UTC | #1
Hi,

Isn't that the same as:
https://patchwork.ozlabs.org/patch/1257381/ ?

On 21/03/2020 19:50:17+0800, 韩科才 wrote:
> Clear alarm register when alarm is not enabled otherwise the consumer
> may still start alarm timer if it find the alarm register is not zero.
> 
> Signed-off-by: hankecai <hankecai@vivo.com>
> ---
>  drivers/rtc/rtc-pm8xxx.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
> index 07ea1be3abb9..3fa5416ad90d 100644
> --- a/drivers/rtc/rtc-pm8xxx.c
> +++ b/drivers/rtc/rtc-pm8xxx.c
> @@ -301,6 +301,7 @@ static int pm8xxx_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
>  	struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev);
>  	const struct pm8xxx_rtc_regs *regs = rtc_dd->regs;
>  	unsigned int ctrl_reg;
> +	u8 value[NUM_8_BIT_RTC_REGS] = {0};
>  
>  	spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags);
>  
> @@ -319,6 +320,16 @@ static int pm8xxx_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
>  		goto rtc_rw_fail;
>  	}
>  
> +	/* Clear Alarm register */
> +	if (!enable) {
> +		rc = regmap_bulk_write(rtc_dd->regmap, regs->alarm_rw, value,
> +				sizeof(value));
> +		if (rc) {
> +			dev_err(dev, "Clear RTC ALARM register failed\n");
> +			goto rtc_rw_fail;
> +		}
> +	}
> +
>  rtc_rw_fail:
>  	spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags);
>  	return rc;
> -- 
> 2.21.0
> 
> 
>
韩科才 March 21, 2020, 1:53 p.m. UTC | #2
Hi,
It's the same as https://patchwork.ozlabs.org/patch/1257381/, so both commit is fine.

thanks


发件人:Alexandre Belloni <alexandre.belloni@bootlin.com>
发送日期:2020-03-21 21:21:25
收件人:"韩科才" <hankecai@vivo.com>
抄送人:a.zummo@towertech.it,linux-rtc@vger.kernel.org,linux-kernel@vger.kernel.org,trivial@kernel.org,kernel@vivo.com
主题:Re: [PATCH] rtc: pm8xxx: clear alarm register when alarm is not enabled>Hi,
>
>Isn't that the same as:
>https://patchwork.ozlabs.org/patch/1257381/ ?
>
>On 21/03/2020 19:50:17+0800, 韩科才 wrote:
>> Clear alarm register when alarm is not enabled otherwise the consumer
>> may still start alarm timer if it find the alarm register is not zero.
>> 
>> Signed-off-by: hankecai <hankecai@vivo.com>
>> ---
>>  drivers/rtc/rtc-pm8xxx.c | 11 +++++++++++
>>  1 file changed, 11 insertions(+)
>> 
>> diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
>> index 07ea1be3abb9..3fa5416ad90d 100644
>> --- a/drivers/rtc/rtc-pm8xxx.c
>> +++ b/drivers/rtc/rtc-pm8xxx.c
>> @@ -301,6 +301,7 @@ static int pm8xxx_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
>>  	struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev);
>>  	const struct pm8xxx_rtc_regs *regs = rtc_dd->regs;
>>  	unsigned int ctrl_reg;
>> +	u8 value[NUM_8_BIT_RTC_REGS] = {0};
>>  
>>  	spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags);
>>  
>> @@ -319,6 +320,16 @@ static int pm8xxx_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
>>  		goto rtc_rw_fail;
>>  	}
>>  
>> +	/* Clear Alarm register */
>> +	if (!enable) {
>> +		rc = regmap_bulk_write(rtc_dd->regmap, regs->alarm_rw, value,
>> +				sizeof(value));
>> +		if (rc) {
>> +			dev_err(dev, "Clear RTC ALARM register failed\n");
>> +			goto rtc_rw_fail;
>> +		}
>> +	}
>> +
>>  rtc_rw_fail:
>>  	spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags);
>>  	return rc;
>> -- 
>> 2.21.0
>> 
>> 
>> 
>
>-- 
>Alexandre Belloni, Bootlin
>Embedded Linux and Kernel engineering
>https://bootlin.com
Alexandre Belloni March 22, 2020, 9:33 p.m. UTC | #3
On 21/03/2020 19:50:17+0800, 韩科才 wrote:
> Clear alarm register when alarm is not enabled otherwise the consumer
> may still start alarm timer if it find the alarm register is not zero.
> 
> Signed-off-by: hankecai <hankecai@vivo.com>
> ---
>  drivers/rtc/rtc-pm8xxx.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c

Because the other one doesn't apply, I've applied that one.
韩科才 March 23, 2020, 10:53 a.m. UTC | #4
Hi,
Sure, thanks for your confirmation.


发件人:Alexandre Belloni <alexandre.belloni@bootlin.com>
发送日期:2020-03-23 05:33:31
收件人:"韩科才" <hankecai@vivo.com>
抄送人:a.zummo@towertech.it,linux-rtc@vger.kernel.org,linux-kernel@vger.kernel.org,trivial@kernel.org,kernel@vivo.com
主题:Re: [PATCH] rtc: pm8xxx: clear alarm register when alarm is not enabled>On 21/03/2020 19:50:17+0800, 韩科才 wrote:
>> Clear alarm register when alarm is not enabled otherwise the consumer
>> may still start alarm timer if it find the alarm register is not zero.
>> 
>> Signed-off-by: hankecai <hankecai@vivo.com>
>> ---
>>  drivers/rtc/rtc-pm8xxx.c | 11 +++++++++++
>>  1 file changed, 11 insertions(+)
>> 
>> diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
>
>Because the other one doesn't apply, I've applied that one.
>
>-- 
>Alexandre Belloni, Bootlin
>Embedded Linux and Kernel engineering
>https://bootlin.com
diff mbox series

Patch

diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
index 07ea1be3abb9..3fa5416ad90d 100644
--- a/drivers/rtc/rtc-pm8xxx.c
+++ b/drivers/rtc/rtc-pm8xxx.c
@@ -301,6 +301,7 @@  static int pm8xxx_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
 	struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev);
 	const struct pm8xxx_rtc_regs *regs = rtc_dd->regs;
 	unsigned int ctrl_reg;
+	u8 value[NUM_8_BIT_RTC_REGS] = {0};
 
 	spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags);
 
@@ -319,6 +320,16 @@  static int pm8xxx_rtc_alarm_irq_enable(struct device *dev, unsigned int enable)
 		goto rtc_rw_fail;
 	}
 
+	/* Clear Alarm register */
+	if (!enable) {
+		rc = regmap_bulk_write(rtc_dd->regmap, regs->alarm_rw, value,
+				sizeof(value));
+		if (rc) {
+			dev_err(dev, "Clear RTC ALARM register failed\n");
+			goto rtc_rw_fail;
+		}
+	}
+
 rtc_rw_fail:
 	spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags);
 	return rc;