commit 8428e6a2c3734950af841f97a0c5c48838df086a
author Rob Herring <robh@kernel.org> Mon Feb 12 16:03:35 2018 -0600
committer Rob Herring <robh@kernel.org> Wed Feb 14 10:26:46 2018 -0600
tree 80253b843bb2379c9ee93262c6259bd9558ccb30
parent b365b792a7373cf09068633b45df178f8a78a67c

drm_hwcomposer: fix check for valid fence fd for in fences

The check for a valid fence fd is inverted, so we're failing to pass
IN_FENCE_FD's to the kernel when we have a valid fence.

Reported-by: Alexandru-Cosmin Gheorghe <Alexandru-Cosmin.Gheorghe@arm.com>
Reviewed-by: Robert Foss <robert.foss@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>

drmdisplaycompositor.cpp

diff --git a/drmdisplaycompositor.cpp b/drmdisplaycompositor.cpp
index 3a20b31..e556e86 100644
--- a/drmdisplaycompositor.cpp
+++ b/drmdisplaycompositor.cpp
@@ -589,7 +589,7 @@
       else
         rotation |= DRM_MODE_ROTATE_0;
 
-      if (fence_fd < 0) {
+      if (fence_fd >= 0) {
         int prop_id = plane->in_fence_fd_property().id();
         if (prop_id == 0) {
                 ALOGE("Failed to get IN_FENCE_FD property id");