[PATCH 18/25] drm/amd/display: pass the right num of modes added

[Bhawanpreet Lakha]

From: Mikita Lipski <mikita.lipski at amd.com>

[why]
In case if edid is null or corrupted we need to manually add
a single failsafe mode (640x480). If zero modes returned
DRM adds a different failsafe mode that is not accepted by
DP 1.2 compliance test

[how]
Return the number of modes manually added

Change-Id: I3ce71263cb564c9a5aea58e248c0fda569c87eb5
Signed-off-by: Mikita Lipski <mikita.lipski at amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li at amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index dac12a58f534..568a041c9141 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3530,7 +3530,8 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
 	encoder = helper->best_encoder(connector);
 
 	if (!edid || !drm_edid_is_valid(edid)) {
-		drm_add_modes_noedid(connector, 640, 480);
+		amdgpu_dm_connector->num_modes =
+				drm_add_modes_noedid(connector, 640, 480);
 	} else {
 		amdgpu_dm_connector_ddc_get_modes(connector, edid);
 		amdgpu_dm_connector_add_common_modes(encoder, connector);
-- 
2.14.1