Wolfram Sang 3693c9ee45 selftests: timers: clocksource-switch: fix passing errors from child
[ Upstream commit 4d8f52ac5fa9eede7b7aa2f2d67c841d9eeb655f ]

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: 7290ce1423c3 ("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>
2022-08-17 15:14:49 +02:00
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