From 67c657bf80513c02f4e60e0953c58103e9f80405 Mon Sep 17 00:00:00 2001
From: mailwl <mailwl@gmail.com>
Date: Sat, 23 Apr 2016 16:17:03 +0300
Subject: [PATCH] return checks if event and memory created

---
 src/core/hle/service/gsp_gpu.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/core/hle/service/gsp_gpu.cpp b/src/core/hle/service/gsp_gpu.cpp
index 9fb4962d8..d254fdd2e 100644
--- a/src/core/hle/service/gsp_gpu.cpp
+++ b/src/core/hle/service/gsp_gpu.cpp
@@ -376,7 +376,14 @@ void SignalInterrupt(InterruptId interrupt_id) {
     if (!gpu_right_acquired) {
         return;
     }
-
+    if (nullptr == g_interrupt_event) {
+        LOG_WARNING(Service_GSP, "cannot synchronize until GSP event has been created!");
+        return;
+    }
+    if (nullptr == g_shared_memory) {
+        LOG_WARNING(Service_GSP, "cannot synchronize until GSP shared memory has been created!");
+        return;
+    }
     for (int thread_id = 0; thread_id < 0x4; ++thread_id) {
         InterruptRelayQueue* interrupt_relay_queue = GetInterruptRelayQueue(thread_id);
         u8 next = interrupt_relay_queue->index;