[PATCH 2/2] drm/exec: add test case for using a drm_exec multiple times

["Christian König" <ckoenig.leichtzumerken@gmail.com>]

Not really a common use case, but let's make sure that we don't
accidentially break that somehow.

CC: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/gpu/drm/tests/drm_exec_test.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_exec_test.c b/drivers/gpu/drm/tests/drm_exec_test.c
index 727ac267682e..7b0238c5d9fa 100644
--- a/drivers/gpu/drm/tests/drm_exec_test.c
+++ b/drivers/gpu/drm/tests/drm_exec_test.c
@@ -138,6 +138,26 @@ static void test_prepare_array(struct kunit *test)
 	drm_exec_fini(&exec);
 }
 
+static void test_multiple_loops(struct kunit *test)
+{
+	struct drm_exec exec;
+
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_until_all_locked(&exec)
+	{
+		break;
+	}
+	drm_exec_fini(&exec);
+
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_until_all_locked(&exec)
+	{
+		break;
+	}
+	drm_exec_fini(&exec);
+	KUNIT_SUCCEED(test);
+}
+
 static struct kunit_case drm_exec_tests[] = {
 	KUNIT_CASE(sanitycheck),
 	KUNIT_CASE(test_lock),
@@ -145,6 +165,7 @@ static struct kunit_case drm_exec_tests[] = {
 	KUNIT_CASE(test_duplicates),
 	KUNIT_CASE(test_prepare),
 	KUNIT_CASE(test_prepare_array),
+	KUNIT_CASE(test_multiple_loops),
 	{}
 };
 
-- 
2.34.1