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https://github.com/torvalds/linux
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86e9b5085d
On x86, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/rtc/lib_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/rtc/rtc-goldfish.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/rtc/rtc-omap.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/rtc/rtc-rc5t583.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/rtc/rtc-tps65910.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/rtc/rtc-twl.o Add the missing invocation of the MODULE_DESCRIPTION() macro to all files which have a MODULE_LICENSE(). This includes rtc-mpc5121.c, which does not produce a warning with the x86 allmodconfig since it is not built for x86, but it may cause this warning with Freescale PPC configurations. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240608-md-drivers-rtc-v1-1-5f44222adfae@quicinc.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
// SPDX-License-Identifier: LGPL-2.1+
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#include <kunit/test.h>
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#include <linux/rtc.h>
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/*
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* Advance a date by one day.
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*/
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static void advance_date(int *year, int *month, int *mday, int *yday)
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{
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if (*mday != rtc_month_days(*month - 1, *year)) {
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++*mday;
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++*yday;
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return;
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}
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*mday = 1;
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if (*month != 12) {
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++*month;
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++*yday;
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return;
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}
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*month = 1;
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*yday = 1;
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++*year;
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}
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/*
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* Check every day in specified number of years interval starting on 1970-01-01
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* against the expected result.
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*/
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static void rtc_time64_to_tm_test_date_range(struct kunit *test, int years)
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{
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/*
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* years = (years / 400) * 400 years
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* = (years / 400) * 146097 days
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* = (years / 400) * 146097 * 86400 seconds
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*/
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time64_t total_secs = ((time64_t)years) / 400 * 146097 * 86400;
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int year = 1970;
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int month = 1;
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int mday = 1;
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int yday = 1;
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struct rtc_time result;
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time64_t secs;
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s64 days;
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for (secs = 0; secs <= total_secs; secs += 86400) {
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rtc_time64_to_tm(secs, &result);
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days = div_s64(secs, 86400);
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#define FAIL_MSG "%d/%02d/%02d (%2d) : %lld", \
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year, month, mday, yday, days
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KUNIT_ASSERT_EQ_MSG(test, year - 1900, result.tm_year, FAIL_MSG);
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KUNIT_ASSERT_EQ_MSG(test, month - 1, result.tm_mon, FAIL_MSG);
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KUNIT_ASSERT_EQ_MSG(test, mday, result.tm_mday, FAIL_MSG);
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KUNIT_ASSERT_EQ_MSG(test, yday, result.tm_yday, FAIL_MSG);
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advance_date(&year, &month, &mday, &yday);
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}
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}
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/*
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* Checks every day in a 160000 years interval starting on 1970-01-01
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* against the expected result.
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*/
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static void rtc_time64_to_tm_test_date_range_160000(struct kunit *test)
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{
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rtc_time64_to_tm_test_date_range(test, 160000);
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}
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/*
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* Checks every day in a 1000 years interval starting on 1970-01-01
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* against the expected result.
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*/
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static void rtc_time64_to_tm_test_date_range_1000(struct kunit *test)
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{
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rtc_time64_to_tm_test_date_range(test, 1000);
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}
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static struct kunit_case rtc_lib_test_cases[] = {
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KUNIT_CASE(rtc_time64_to_tm_test_date_range_1000),
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KUNIT_CASE_SLOW(rtc_time64_to_tm_test_date_range_160000),
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{}
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};
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static struct kunit_suite rtc_lib_test_suite = {
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.name = "rtc_lib_test_cases",
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.test_cases = rtc_lib_test_cases,
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};
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kunit_test_suite(rtc_lib_test_suite);
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MODULE_DESCRIPTION("KUnit test for RTC lib functions");
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MODULE_LICENSE("GPL");
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