From bd63d1dcdaa93cae28220217ac041d019153f2ad Mon Sep 17 00:00:00 2001
From: joevt <joevt@shaw.ca>
Date: Sun, 18 Feb 2024 18:14:31 -0800
Subject: [PATCH] platinum: Validity check before enable display.

---
 devices/memctrl/platinum.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/devices/memctrl/platinum.cpp b/devices/memctrl/platinum.cpp
index 3eb1484..05698e8 100644
--- a/devices/memctrl/platinum.cpp
+++ b/devices/memctrl/platinum.cpp
@@ -444,6 +444,13 @@ void PlatinumCtrl::enable_display() {
 
     this->stop_refresh_task();
 
+    if (this->active_width <= 0 || this->active_height <= 0 || this->pixel_clock <= 0) {
+        this->blank_on = true;
+        this->crtc_on = false;
+        this->blank_display();
+        return;
+    }
+
     this->refresh_rate = (double)(this->pixel_clock) / (this->hori_total * this->vert_total);
     this->start_refresh_task();