lib/drmtest: Fix igt_stop_signal_helper for subtest listing

We need to bail out early for otherwise we'll hit the
!signal_helper->running assert.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/drmtest.c b/lib/drmtest.c
index f1ee13c5..5c52ddcd 100644
--- a/lib/drmtest.c
+++ b/lib/drmtest.c
@@ -622,6 +622,9 @@ void igt_fork_signal_helper(void)
 
 void igt_stop_signal_helper(void)
 {
+	if (igt_only_list_subtests())
+		return;
+
 	igt_stop_helper(&signal_helper);
 
 	sig_stat = 0;