linux-kernel - Re: [PATCH v2] rtc: stm32: One condition check and function call less in stm32_rtc_set_alarm()

Open Source and information security mailing list archives

Date:   Mon, 8 Jul 2019 09:12:52 +0000
From:   Amelie DELAUNAY <amelie.delaunay@...com>
To:     Markus Elfring <Markus.Elfring@....de>,
        "linux-rtc@...r.kernel.org" <linux-rtc@...r.kernel.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Russell King <linux@...linux.org.uk>
CC:     "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] rtc: stm32: One condition check and function call less
 in stm32_rtc_set_alarm()

On 7/8/19 10:42 AM, Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Mon, 8 Jul 2019 10:26:47 +0200
> 
> A condition check was repeated in this function implementation despite of
> a corresponding check in the stm32_rtc_alarm_irq_enable() function.
> Thus delete redundant source code here.
> 
> Suggested-by: Russell King <linux@...linux.org.uk>
> Link: https://lore.kernel.org/lkml/20190707211638.sehikkear25dffah@shell.armlinux.org.uk/
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>

Reviewed-by: Amelie Delaunay <amelie.delaunay@...com>

> ---
> 
> v2:
> Russell King pointed the change possibility out to omit a condition check
> at this place.
> 
> 
>   drivers/rtc/rtc-stm32.c | 6 +-----
>   1 file changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c
> index 8e6c9b3bcc29..773a1990b93f 100644
> --- a/drivers/rtc/rtc-stm32.c
> +++ b/drivers/rtc/rtc-stm32.c
> @@ -519,11 +519,7 @@ static int stm32_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
>   	/* Write to Alarm register */
>   	writel_relaxed(alrmar, rtc->base + regs->alrmar);
> 
> -	if (alrm->enabled)
> -		stm32_rtc_alarm_irq_enable(dev, 1);
> -	else
> -		stm32_rtc_alarm_irq_enable(dev, 0);
> -
> +	stm32_rtc_alarm_irq_enable(dev, alrm->enabled);
>   end:
>   	stm32_rtc_wpr_lock(rtc);
> 
> --
> 2.22.0
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>

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