staging: sync: Don't log wait timeouts when timeout = 0

If the timeout is zero, don't trip the timeout debugging

Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Added commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/sync.c

@@ -616,7 +616,7 @@ int sync_fence_wait(struct sync_fence *fence, long timeout)
 		return fence->status;
 	}
 
-	if (fence->status == 0) {
+	if (fence->status == 0 && timeout > 0) {
 		pr_info("fence timeout on [%p] after %dms\n", fence,
 			jiffies_to_msecs(timeout));
 		sync_dump();