linux-kernel - Re: [PATCH v3 1/2] rtc: rtc-pm8xxx: clear the interrupt in probe

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Message-ID: <20240319191037.GA3796206@hu-bjorande-lv.qualcomm.com>
Date: Tue, 19 Mar 2024 12:10:37 -0700
From: Bjorn Andersson <quic_bjorande@...cinc.com>
To: jianbinz <quic_jianbinz@...cinc.com>
CC: <alexandre.belloni@...tlin.com>, <a.zummo@...ertech.it>,
        <linux-rtc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/2] rtc: rtc-pm8xxx: clear the interrupt in probe

On Thu, Mar 14, 2024 at 11:33:44AM +0800, jianbinz wrote:
> If the alarm is triggered before the driver gets probed, the alarm
> interrupt will be missed and it won't be detected, so clear the
> stale interrupt in probe.
> 
> Changes in v3:

The change log goes below the '---' line below.

> *clear the interrupt in driver probe
> 
> Changes in v2:
> *Adapt the V1 patch according to the newest rtc-pm8xxx
> link to v2: https://lore.kernel.org/linux-rtc/20240124024023df15ef6e@mail.local/
> 
> Changes in v1:
> *During driver probe: read ALARM_EN, read ALARM_DATA, read RTC_RDATA,
> if (ALARM_DATA < RTC_DATA), Trigger the alarm event and clear the alarm settins
> Link to v1:https://lore.kernel.org/linux-rtc/20220321090514.4523-1-quic_jianbinz@quicinc.com/
> 
> Changes in original:
> link to original: https://lore.kernel.org/linux-rtc/YTusgJlMUdXOKQaL@piout.net/
> 
> Signed-off-by: jianbinz <quic_jianbinz@...cinc.com>

Please use your full name, both for authorship and signed-off.

Your two patches are not sent as a series, and you don't have a
cover-letter, which is expected.

Please read through go/upstream, and start using b4 for preparing your
patches, as this will help you with the practicalities.

> ---
>  drivers/rtc/rtc-pm8xxx.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
> index f6b779c12ca7..1b5a96924e57 100644
> --- a/drivers/rtc/rtc-pm8xxx.c
> +++ b/drivers/rtc/rtc-pm8xxx.c
> @@ -527,6 +527,10 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev)
>  	if (rc)
>  		return rc;
>  
> +	rc = regmap_update_bits(rtc_dd->regmap, rtc_dd->regs->alarm_ctrl2, PM8xxx_RTC_ALARM_CLEAR, 1);

Unless I'm mistaken, this line is over 100 characters, please wrap it.


Please also Cc: linux-arm-msm@...r.kernel.org on your next version.

Regards,
Bjorn

> +	if (rc)
> +		return rc;
> +
>  	return 0;
>  }
>  
> -- 
> 2.17.1
>