[PATCH v2] selftests/ftrace: fix spelling error in poll test comment

[Wang Yan]

Fix typo "happned" -> "happened" in ftrace poll test comment.

Signed-off-by: Wang Yan <wangyan01@xxxxxxxxxx>
---
 tools/testing/selftests/ftrace/poll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/ftrace/poll.c b/tools/testing/selftests/ftrace/poll.c
index 53258f7515e7..4da86a20dc85 100644
--- a/tools/testing/selftests/ftrace/poll.c
+++ b/tools/testing/selftests/ftrace/poll.c
@@ -66,7 +66,7 @@ int main(int argc, char *argv[])
 	}
 	close(pfd.fd);
 
-	/* If timeout happned (ret == 0), exit code is 1 */
+	/* If timeout happened (ret == 0), exit code is 1 */
 	if (ret == 0)
 		return 1;
 
-- 
2.25.1