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

[Christian König]

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

CC: Boris Brezillon <boris.brezil...@collabora.com>
Signed-off-by: Christian König <christian.koe...@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