Fix crash on boot
There is a race condition where the sysfs-vsync thread accesses a value
(in particular a function ptr) that may not have been set yet as this
is done externally.
Change-Id: If1afb1533344e994398b9b6f5bd3dfb125313416
diff --git a/exynos4/hal/libhwcomposer/SecHWC.cpp b/exynos4/hal/libhwcomposer/SecHWC.cpp
index 1831125..b652837 100644
--- a/exynos4/hal/libhwcomposer/SecHWC.cpp
+++ b/exynos4/hal/libhwcomposer/SecHWC.cpp
@@ -965,7 +965,8 @@
do {
ssize_t len = read(vsync_timestamp_fd, buf, sizeof(buf));
timestamp = strtoull(buf, NULL, 0);
- ctx->procs->vsync(ctx->procs, 0, timestamp);
+ if(ctx->procs)
+ ctx->procs->vsync(ctx->procs, 0, timestamp);
select(vsync_timestamp_fd + 1, NULL, NULL, &exceptfds, NULL);
lseek(vsync_timestamp_fd, 0, SEEK_SET);
} while (1);