ENGR00172292 usb otg: enable dtds postpone free on mx6

We found this bug occurs again on mx6 when running
CTS with ADB over USB. The system will hang without
any log, and screen a little mess.
It's proved to be a known USB IP issue: USB controller
may access a wrong address for the dTD and then hang.
Re enable this workaround to avoid any system unstability.

Signed-off-by: Xinyu Chen <xinyu.chen@freescale.com>

diff --git a/drivers/usb/gadget/arcotg_udc.h b/drivers/usb/gadget/arcotg_udc.h
index 00c8e8a8cdd7e539c1a5ee3b527ae117fbe5ff3c..8f4b88ebc283113f9cacf615d47d34fe0539b4fa 100755 (executable)
--- a/drivers/usb/gadget/arcotg_udc.h
+++ b/drivers/usb/gadget/arcotg_udc.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2009-2012 Freescale Semiconductor, Inc. All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -46,11 +46,7 @@
 #define NEED_IRAM(ep) ((g_iram_size) && \
        ((ep)->desc->bmAttributes == USB_ENDPOINT_XFER_BULK))
 
-#ifdef CONFIG_ARCH_MX5
 #define POSTPONE_FREE_LAST_DTD
-#else
-#undef POSTPONE_FREE_LAST_DTD
-#endif
 
 /* ### define USB registers here
  */