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rtc: rtc-mc146818-lib: Use is_leap_year instead of calculate leap years

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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@nigauri.org>
Acked-by: Maciej W. Rozycki <macro@orcam.me.uk>
Link: https://lore.kernel.org/r/20241007233618.1442937-1-nobuhiro1.iwamatsu@toshiba.co.jp
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Nobuhiro Iwamatsu 2024-10-08 08:36:18 +09:00 committed by Alexandre Belloni
parent b6cd7adec0
commit 49fd6f907f
1 changed files with 2 additions and 4 deletions
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6
drivers/rtc/rtc-mc146818-lib.c
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@ -216,7 +216,7 @@ int mc146818_set_time(struct rtc_time *time)
unsigned char save_control, save_freq_select;
unsigned int yrs;
#ifdef CONFIG_MACH_DECSTATION
unsigned int real_yrs, leap_yr;
unsigned int real_yrs;
#endif
unsigned char century = 0;
@ -232,8 +232,6 @@ 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));
yrs = 72;
/*
@ -241,7 +239,7 @@ int mc146818_set_time(struct rtc_time *time)
* for non-leap years, so that Feb, 29th is handled
* correctly.
*/
if (!leap_yr && mon < 3) {
if (!is_leap_year(real_yrs + 1900) && mon < 3) {
real_yrs--;
yrs = 73;
}