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lib/rtc: Remove unnecessary year constraint in rtc_calc_weekday 

Algorithm used to calculate weekday is now based on Zeller's rule, so it
does not need if statement constraining year to 1971 and later.

Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: I25e2e6a1c9b2fb1ac2576e028b580db0ea474d37
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52347
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
This commit is contained in:
Jakub Czapiga 2021-04-14 16:48:10 +02:00 committed by Patrick Georgi
parent a4819b3c31
commit 4ae7ee6e2b
1 changed files with 0 additions and 3 deletions
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3
src/lib/rtc.c
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@ -22,9 +22,6 @@ static const char *const weekdays[] = {
/* Zeller's rule */ /* Zeller's rule */
static int rtc_calc_weekday(struct rtc_time *tm) static int rtc_calc_weekday(struct rtc_time *tm)
{ {
if (tm->year < 1971)
return -1;
/* In Zeller's rule, January and February are treated as if they /* In Zeller's rule, January and February are treated as if they
are months 13 and 14 of the previous year (March is still month 3) */ are months 13 and 14 of the previous year (March is still month 3) */
const int zyear = ((tm->mon < 3) ? tm->year - 1 : tm->year); const int zyear = ((tm->mon < 3) ? tm->year - 1 : tm->year);