From e2b56fe71d467e897b46d0930aacc34f03c7178c Mon Sep 17 00:00:00 2001
From: "Carsten Haitzler (Rasterman)" <raster@rasterman.com>
Date: Wed, 10 Apr 2019 16:09:04 +0100
Subject: [PATCH] ecore drm2 - handle possible NULL fb when doing a flip

---
 src/lib/ecore_drm2/ecore_drm2_fb.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/lib/ecore_drm2/ecore_drm2_fb.c b/src/lib/ecore_drm2/ecore_drm2_fb.c
index 017f981693..e8f6c16762 100644
--- a/src/lib/ecore_drm2/ecore_drm2_fb.c
+++ b/src/lib/ecore_drm2/ecore_drm2_fb.c
@@ -510,6 +510,16 @@ _fb_flip(Ecore_Drm2_Output *output)
    int ret = 0;
 
    fb = output->prep.fb;
+   if (!fb)
+     {
+        fb =  output->pending.fb;
+        ERR("Trying to flip NULL fb - fallback to pending fb");
+     }
+   if (!fb)
+     {
+        ERR("Pending fb is also NULL, give up flipping");
+        return ret;
+     }
 
    if ((!output->current.fb) ||
        (output->current.fb->strides[0] != fb->strides[0]))