From 52d242f2bffef61e6c3bbc7ebbf41c4bf7b010d0 Mon Sep 17 00:00:00 2001 From: Po-Hsu Lin Date: Tue, 25 May 2021 10:36:14 +0800 Subject: [PATCH] selftests: timers: rtcpie: skip test if default RTC device does not exist [ Upstream commit 0d3e5a057992bdc66e4dca2ca50b77fa4a7bd90e ] This test will require /dev/rtc0, the default RTC device, or one specified by user to run. Since this default RTC is not guaranteed to exist on all of the devices, so check its existence first, otherwise skip this test with the kselftest skip code 4. Without this patch this test will fail like this on a s390x zVM: $ selftests: timers: rtcpie $ /dev/rtc0: No such file or directory not ok 1 selftests: timers: rtcpie # exit=22 With this patch: $ selftests: timers: rtcpie $ Default RTC /dev/rtc0 does not exist. Test Skipped! not ok 9 selftests: timers: rtcpie # SKIP Fixed up change log so "With this patch" text doesn't get dropped. Shuah Khan Signed-off-by: Po-Hsu Lin Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin --- tools/testing/selftests/timers/rtcpie.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/timers/rtcpie.c b/tools/testing/selftests/timers/rtcpie.c index 47b5bad1b393..4ef2184f1558 100644 --- a/tools/testing/selftests/timers/rtcpie.c +++ b/tools/testing/selftests/timers/rtcpie.c @@ -18,6 +18,8 @@ #include #include +#include "../kselftest.h" + /* * This expects the new RTC class driver framework, working with * clocks that will often not be clones of what the PC-AT had. @@ -35,8 +37,14 @@ int main(int argc, char **argv) switch (argc) { case 2: rtc = argv[1]; - /* FALLTHROUGH */ + break; case 1: + fd = open(default_rtc, O_RDONLY); + if (fd == -1) { + printf("Default RTC %s does not exist. Test Skipped!\n", default_rtc); + exit(KSFT_SKIP); + } + close(fd); break; default: fprintf(stderr, "usage: rtctest [rtcdev] [d]\n");