commit 535a1bdb2ae7c3316340d97ca0c9e3d5608f3cb6
author Justin Philip <jphili@codeaurora.org> Thu Sep 11 14:24:27 2014 +0530
committer Gerrit - the friendly Code Review server <code-review@localhost> Sun Sep 14 23:04:16 2014 -0700
tree 5437332be714cede21670e1dbec941e08af3d087
parent d6a3a5e94aa7e99ab49015cab97383efdf9a7c44

hwc: Fix Line to Block switch on primary for targets with DMA Multiplexing

DMA multiplexing is supported on WB mode only.
For primary the DMA multiplexing should be avoided
as it can lead to hung rotator.
This can happen when the DMA is being unset from overlay,
while at the same time rotator gets configured.

Change-Id: I0c2cb8a5a1ebad8a8e4ed8107d5585836bc42451

libhwcomposer/hwc.cpp

diff --git a/libhwcomposer/hwc.cpp b/libhwcomposer/hwc.cpp
index 6f4f9c6..513edd3 100644
--- a/libhwcomposer/hwc.cpp
+++ b/libhwcomposer/hwc.cpp
@@ -138,7 +138,8 @@
                     if (canUseRotator(ctx, dpy) &&
                         (has90Transform(layer) || getRotDownscale(ctx, layer))
                         && isRotationDoable(ctx, hnd)) {
-                        if(not ctx->mOverlay->isDMAMultiplexingSupported()) {
+                        if(not (ctx->mOverlay->isDMAMultiplexingSupported() &&
+                                          dpy)) {
                             if(ctx->mOverlay->isPipeTypeAttached(
                                              overlay::utils::OV_MDP_PIPE_DMA))
                                 ctx->isPaddingRound = true;