[igt-dev] [PATCH i-g-t] tests/kms_dp_dsc: Disable DSC even if enabling failed

[Dhinakaran Pandiyan]

The test leaves the debugfs flag enabled if the driver failed to enable
DSC. And is it turns out, the feature gets enabled only after the test
completes and consequently affects PSR2 tests that follow. Let's make sure
the test cleans up correctly, even if the DSC test itself needs to be
fixed.

Also included some formatting fixes within the function.

Cc: José Roberto de Souza <jose.souza at intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
---
 tests/kms_dp_dsc.c | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/tests/kms_dp_dsc.c b/tests/kms_dp_dsc.c
index 9792be33..da93cd74 100644
--- a/tests/kms_dp_dsc.c
+++ b/tests/kms_dp_dsc.c
@@ -157,14 +157,16 @@ static void update_display(data_t *data, enum dsc_test_type test_type)
 
 	if (data->connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort &&
 	    data->pipe == PIPE_A) {
-		igt_debug ("DSC not supported on Pipe A on external DP\n");
+		igt_debug("DSC not supported on Pipe A on external DP\n");
 		return;
 	}
 
 	if (test_type == test_basic_dsc_enable) {
-		igt_debug ("DSC is supported on %s\n",
-			   data->conn_name);
+		bool enabled;
+
+		igt_debug("DSC is supported on %s\n", data->conn_name);
 		force_dp_dsc_enable(data);
+
 		igt_create_pattern_fb(data->drm_fd, data->mode->hdisplay,
 				      data->mode->vdisplay,
 				      DRM_FORMAT_XRGB8888,
@@ -174,13 +176,20 @@ static void update_display(data_t *data, enum dsc_test_type test_type)
 						    DRM_PLANE_TYPE_PRIMARY);
 		igt_plane_set_fb(primary, &data->fb_test_pattern);
 		igt_display_commit(&data->display);
-		/* Until we have CRC check support, manually check if RGB test pattern has no corruption */
-		manual ("RGB test pattern without corruption");
-		igt_assert_f(is_dp_dsc_enabled(data),
+
+		/*
+		 * Until we have CRC check support, manually check if RGB test
+		 * pattern has no corruption.
+		 */
+		manual("RGB test pattern without corruption");
+
+		enabled = is_dp_dsc_enabled(data);
+		clear_dp_dsc_enable(data);
+
+		igt_assert_f(enabled,
 			     "Default DSC enable failed on Connector: %s Pipe: %s",
 			     data->conn_name,
 			     kmstest_pipe_name(data->pipe));
-		clear_dp_dsc_enable(data);
 	} else {
 		igt_assert(!"Unknown test type\n");
 	}
-- 
2.17.1