Re: [PATCH] rtc: rtc-mc146818-lib: Use is_leap_year instead of calculate leap years

[Alexandre Belloni]

Hello,

On 06/10/2024 09:15:53+0900, Nobuhiro Iwamatsu wrote:
> The is_leap_year() for determining leap year is provided in rtc lib.
> This uses is_leap_year() instead of its own leap year determination
> routine.
> 
> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@xxxxxxxxxxx>
> ---
>  drivers/rtc/rtc-mc146818-lib.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-mc146818-lib.c b/drivers/rtc/rtc-mc146818-lib.c
> index 651bf3c279c74..ce4d68de05831 100644
> --- a/drivers/rtc/rtc-mc146818-lib.c
> +++ b/drivers/rtc/rtc-mc146818-lib.c
> @@ -232,8 +232,7 @@ int mc146818_set_time(struct rtc_time *time)
>  
>  #ifdef CONFIG_MACH_DECSTATION
>  	real_yrs = yrs;
> -	leap_yr = ((!((yrs + 1900) % 4) && ((yrs + 1900) % 100)) ||
> -			!((yrs + 1900) % 400));
> +	leap_yr = is_leap_year(yrs + 1900);

Could you also eliminate the leap_yr variable?

Thanks!

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com