From: Deepak Rawat <drawat@vmware.com>
Date: Thu, 13 Sep 2018 12:33:49 +0200
Subject: drm/vmwgfx: don't check for old_crtc_state enable status
Git-commit: bfc888261474efb0676f0e1d128f22c9692b97b1
Patch-mainline: v4.19-rc5
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

During atomic check to prepare the new topology no need to check if
old_crtc_state was enabled or not. This will cause atomic_check to fail
because due to connector routing a crtc can be in atomic_state even if
there was no change to enable status.

Detected this issue with igt run.

Signed-off-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -1615,7 +1615,7 @@ static int vmw_kms_check_topology(struct
 		struct drm_connector_state *conn_state;
 		struct vmw_connector_state *vmw_conn_state;
 
-		if (!new_crtc_state->enable && old_crtc_state->enable) {
+		if (!new_crtc_state->enable) {
 			rects[i].x1 = 0;
 			rects[i].y1 = 0;
 			rects[i].x2 = 0;