diff --git a/pcsx2/CDVD/CDVDaccess.cpp b/pcsx2/CDVD/CDVDaccess.cpp
index c966628f2b..aa73a7db8a 100644
--- a/pcsx2/CDVD/CDVDaccess.cpp
+++ b/pcsx2/CDVD/CDVDaccess.cpp
@@ -480,7 +480,7 @@ void CALLBACK NODISCdummyVOID()
 {
 }
 
-void CALLBACK NODISCnewDiskCB(void(CALLBACK*)())
+void CALLBACK NODISCnewDiskCB(__unused void (*callback)())
 {
 }
 
diff --git a/pcsx2/CDVD/CDVDisoReader.cpp b/pcsx2/CDVD/CDVDisoReader.cpp
index 645b44172c..4f87bc96e4 100644
--- a/pcsx2/CDVD/CDVDisoReader.cpp
+++ b/pcsx2/CDVD/CDVDisoReader.cpp
@@ -396,7 +396,7 @@ void CALLBACK ISOdummyVOID()
 {
 }
 
-void CALLBACK ISOnewDiskCB(void(CALLBACK*)())
+void CALLBACK ISOnewDiskCB(__unused void (*callback)())
 {
 }
 
diff --git a/pcsx2/IPU/IPU.h b/pcsx2/IPU/IPU.h
index ca6e6498a1..536540aae5 100644
--- a/pcsx2/IPU/IPU.h
+++ b/pcsx2/IPU/IPU.h
@@ -233,14 +233,11 @@ extern u8* g_pIPU0Pointer;
 PCSX2_ALIGNED16(extern macroblock_rgb32 rgb32);
 PCSX2_ALIGNED16(extern macroblock_8 mb8);
 
-void dmaIPU0();
-void dmaIPU1();
-
-int ipuInit();
-void ipuReset();
-void ipuShutdown();
-int  ipuFreeze(gzFile f, int Mode);
-bool ipuCanFreeze();
+extern int ipuInit();
+extern void ipuReset();
+extern void ipuShutdown();
+extern int  ipuFreeze(gzFile f, int Mode);
+extern bool ipuCanFreeze();
 
 
 extern u32 ipuRead32(u32 mem);
@@ -248,11 +245,6 @@ extern u64 ipuRead64(u32 mem);
 extern void ipuWrite32(u32 mem,u32 value);
 extern void ipuWrite64(u32 mem,u64 value);
 
-int ipuConstRead32(u32 x86reg, u32 mem);
-void ipuConstRead64(u32 mem, int mmreg);
-void ipuConstWrite32(u32 mem, int mmreg);
-void ipuConstWrite64(u32 mem, int mmreg);
-
 extern void IPUCMD_WRITE(u32 val);
 extern void ipuSoftReset();
 extern void IPUProcessInterrupt();
diff --git a/pcsx2/MTGS.cpp b/pcsx2/MTGS.cpp
index 4463e75b07..66f42e8369 100644
--- a/pcsx2/MTGS.cpp
+++ b/pcsx2/MTGS.cpp
@@ -218,6 +218,7 @@ mtgsThreadObject::mtgsThreadObject() :
 
 void mtgsThreadObject::Start()
 {
+	m_post_InitDone.Reset();
 	Thread::Start();
 
 	// Wait for the thread to finish initialization (it runs GSinit, which can take