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rtc: test: Emit the seconds-since-1970 value instead of days-since-1970

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This is easier to handle because you can just consult date(1) to convert
between a seconds-since-1970 value and a date string:

	$ date --utc -d @3661
	Thu Jan  1 01:01:01 AM UTC 1970

	$ date -d "Jan 1 12:00:00 AM UTC 1900" +%s
	-2208988800

The intended side effect is that this prepares the test for dates before
1970. The division of a negative value by 86400 doesn't result in the
desired days-since-1970 value as e.g. secs=-82739 should map to days=-1.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://lore.kernel.org/r/20250428-enable-rtc-v4-3-2b2f7e3f9349@baylibre.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Uwe Kleine-König
2025-04-28 12:06:49 +02:00
committed by Alexandre Belloni
parent fe9f5f96cf
commit 46351921cb
1 changed files with 1 additions and 4 deletions
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5
drivers/rtc/lib_test.c
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@@ -46,16 +46,13 @@ static void rtc_time64_to_tm_test_date_range(struct kunit *test, int years)
struct rtc_time result;
time64_t secs;
s64 days;
for (secs = 0; secs <= total_secs; secs += 86400) {
rtc_time64_to_tm(secs, &result);
days = div_s64(secs, 86400);
#define FAIL_MSG "%d/%02d/%02d (%2d) : %lld", \
year, month, mday, yday, days
year, month, mday, yday, secs
KUNIT_ASSERT_EQ_MSG(test, year - 1900, result.tm_year, FAIL_MSG);
KUNIT_ASSERT_EQ_MSG(test, month - 1, result.tm_mon, FAIL_MSG);