From 48b00790009d9e1a6b664312de1e13b0732fc9fe Mon Sep 17 00:00:00 2001
From: Jakub Czapiga <jacz@semihalf.com>
Date: Thu, 15 Apr 2021 12:30:27 +0200
Subject: lib/rtc: Fix incomplete leap year macro

Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Found-by: Paul Fagerburg <pfagerburg@chromium.org>
Change-Id: Ic434c969141c67ce317a5db0c8805de02c84eb08
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52370
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
---
 src/lib/rtc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib/rtc.c b/src/lib/rtc.c
index 5e03cfae1e..c5fffa0e8b 100644
--- a/src/lib/rtc.c
+++ b/src/lib/rtc.c
@@ -11,7 +11,7 @@
 #define STARTOFTIME		1970
 #define SECDAY			86400L
 #define SECYR			(SECDAY * 365)
-#define LEAP_YEAR(year)		((year) % 4 == 0)
+#define LEAP_YEAR(year)		(((year) % 4 == 0 && (year) % 100 != 0) || (year) % 400 == 0)
 #define DAYS_IN_YEAR(a)		(LEAP_YEAR(a) ? 366 : 365)
 #define DAYS_IN_MONTH(a)	(month_days[(a) - 1])
 
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