Index: firmware/target/arm/usb-s3c6400x.c
===================================================================
--- firmware/target/arm/usb-s3c6400x.c	(Revision 24322)
+++ firmware/target/arm/usb-s3c6400x.c	(Arbeitskopie)
@@ -279,13 +279,15 @@
     if (!length)
     {
         DIEPTSIZ(ep) = 1 << 19;  /* one empty packet */
-        DIEPDMA(ep) = 0x10000000;  /* dummy address */
     }
     else
     {
         DIEPTSIZ(ep) = length | (packets << 19);
-        DIEPDMA(ep) = (uint32_t)ptr;
     }
+
+    if(ptr==NULL) DIEPDMA(ep) = 0x10000000;
+    else DIEPDMA(ep) = (uint32_t)ptr;
+
     clean_dcache();
     DIEPCTL(ep) |= 0x84000000;  /* EPx OUT ENABLE CLEARNAK */
 }
@@ -301,13 +303,15 @@
     if (!length)
     {
         DOEPTSIZ(ep) = 1 << 19;  /* one empty packet */
-        DOEPDMA(ep) = 0x10000000;  /* dummy address */
     }
     else
     {
         DOEPTSIZ(ep) = length | (packets << 19);
-        DOEPDMA(ep) = (uint32_t)ptr;
     }
+
+    if(ptr==NULL) DOEPDMA(ep) = 0x10000000;
+    else DOEPDMA(ep) = (uint32_t)ptr;
+
     clean_dcache();
     DOEPCTL(ep) |= 0x84000000;  /* EPx OUT ENABLE CLEARNAK */
 }