From 2d01367cf6d55bac4fabdd62545b75202e62412b Mon Sep 17 00:00:00 2001
From: MysterD <myster@d>
Date: Mon, 10 Apr 2023 17:46:45 -0700
Subject: [PATCH] Possible crash fix for osPiStartDma()

---
 src/pc/ultra_reimplementation.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pc/ultra_reimplementation.c b/src/pc/ultra_reimplementation.c
index 85651ef7..6cd99cc1 100644
--- a/src/pc/ultra_reimplementation.c
+++ b/src/pc/ultra_reimplementation.c
@@ -14,6 +14,7 @@ u64 osClockRate = 62500000;
 s32 osPiStartDma(UNUSED OSIoMesg *mb, UNUSED s32 priority, UNUSED s32 direction,
                  uintptr_t devAddr, void *vAddr, size_t nbytes,
                  UNUSED OSMesgQueue *mq) {
+    if (!vAddr || !devAddr) { return 0; }
     memcpy(vAddr, (const void *) devAddr, nbytes);
     return 0;
 }