[PATCH 5/9] selftests: timers: clocksource-switch: fix passing errors from child

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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 apropriate macros to really pass on errors.

Fixes: 7290ce1423c3 ("selftests/timers: Add clocksource-switch test from timetest suite")
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
 tools/testing/selftests/timers/clocksource-switch.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/timers/clocksource-switch.c b/tools/testing/selftests/timers/clocksource-switch.c
index ef8eb3604595..b57f0a9be490 100644
--- a/tools/testing/selftests/timers/clocksource-switch.c
+++ b/tools/testing/selftests/timers/clocksource-switch.c
@@ -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;
 }
 
 
-- 
2.35.1




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