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selftests: timers: clocksource-switch: fix passing errors from child

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[ Upstream commit 4d8f52ac5f ]

The return value from system() is a waitpid-style integer. Do not return
it directly because with the implicit masking in exit() it will always
return 0. Access it with appropriate macros to really pass on errors.

Fixes: 7290ce1423 ("selftests/timers: Add clocksource-switch test from timetest suite")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: John Stultz <jstultz@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wolfram Sang
2022-07-13 22:46:17 +02:00
committed by Greg Kroah-Hartman
parent ee3cc4c761
commit 990ca39e78
1 changed files with 3 additions and 3 deletions
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6
tools/testing/selftests/timers/clocksource-switch.c
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@@ -110,10 +110,10 @@ int run_tests(int secs)
sprintf(buf, "./inconsistency-check -t %i", secs);
ret = system(buf);
if (ret)
return ret;
if (WIFEXITED(ret) && WEXITSTATUS(ret))
return WEXITSTATUS(ret);
ret = system("./nanosleep");
return ret;
return WIFEXITED(ret) ? WEXITSTATUS(ret) : 0;
}