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authorNobuhiro Iwamatsu <iwamatsu@nigauri.org>2024-10-08 08:36:18 +0900
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2024-11-10 23:02:43 +0100
commit49fd6f907f4623fa029a24b21f667b99594438bd (patch)
tree2ff89e0a6ac4e8575884dcbaed0c883e3fe06b09 /drivers/rtc
parentb6cd7adec0cf03f0aefc55676e71dd721cbc71a8 (diff)
rtc: rtc-mc146818-lib: Use is_leap_year instead of calculate leap years
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>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-mc146818-lib.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-mc146818-lib.c b/drivers/rtc/rtc-mc146818-lib.c
index 651bf3c279c7..dbd2d5835f00 100644
--- a/drivers/rtc/rtc-mc146818-lib.c
+++ b/drivers/rtc/rtc-mc146818-lib.c
@@ -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;
}