From d6b1474f2db64718b544741c91354a693a5c5b91 Mon Sep 17 00:00:00 2001
From: Kevin Matlage <kmatlage@codeaurora.org>
Date: Wed, 11 Jan 2012 10:42:50 -0700
Subject: [PATCH] Make SurfaceFlinger respect swapinterval property

A Google modification to eglCreateWindowSurface was
causing SurfaceFlinger to set its swap interval
value back to 1, regardless of the value set in the
debug.gr.swapinterval property.

This patch modifies the fb_setSwapInterval function
in gralloc to check the debug.gr.swapinterval
property and not change the swap interval if a value
is set there.

CRs-fixed: 329524
Change-Id: I80463c1209addbff227db7832dd0023e94eb06ac
---
 libgralloc/framebuffer.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libgralloc/framebuffer.cpp b/libgralloc/framebuffer.cpp
index 2011c1c..92f07a5 100644
--- a/libgralloc/framebuffer.cpp
+++ b/libgralloc/framebuffer.cpp
@@ -159,6 +159,12 @@ msm_copy_buffer(buffer_handle_t handle, int fd,
 static int fb_setSwapInterval(struct framebuffer_device_t* dev,
             int interval)
 {
+    char pval[PROPERTY_VALUE_MAX];
+    property_get("debug.gr.swapinterval", pval, "-1");
+    int property_interval = atoi(pval);
+    if (property_interval >= 0)
+        interval = property_interval;
+
     fb_context_t* ctx = (fb_context_t*)dev;
     private_module_t* m = reinterpret_cast<private_module_t*>(
             dev->common.module);