NEC USB patch

[Andrew Lunn]

Hi Folks

The USBChecker program from the USB Forum detected a problem with the
USB driver for the NEC upd985xx driver. The test program sends a
configuration request the device cannot handle, so it stalls EP0. This
is correct. But it does start a new receive process for EP0, so all
subsequent messages to ep0 are ignored. This patch adds in the
starting of a new receive process for ep0 after a stall. 

Anssi did all the hard work of figuring out what was wrong. I just
wrote 1 line of code and a comment. Hence in the ChangeLog i've given
the credit to Anssi.

    Andrew

Index: ChangeLog
===================================================================
RCS file: /cvs/ecos/ecos/packages/devs/usb/nec_upd985xx/current/ChangeLog,v
retrieving revision 1.4
diff -u -r1.4 ChangeLog
--- ChangeLog   2 Dec 2002 20:48:15 -0000       1.4
+++ ChangeLog   22 Jan 2003 10:37:17 -0000
@@ -1,3 +1,8 @@
+2003-01-22  Anssi Pulkkinen <anssi.pulkkinen@ascom.ch>
+
+       * src/usbs_upd985xx.c (ep0_rx_dsr): After sending a stall response
+       on ep0, start a new receive process for the next control message.
+
 2002-12-01  Bart Veer  <bartv@ecoscentric.com>
 
        * src/usbs_upd985xx.c, cdl/usbs_upd985xx.cdl:
Index: src/usbs_upd985xx.c
===================================================================
RCS file: /cvs/ecos/ecos/packages/devs/usb/nec_upd985xx/current/src/usbs_upd985xx.c,v
retrieving revision 1.4
diff -u -r1.4 usbs_upd985xx.c
--- src/usbs_upd985xx.c 2 Dec 2002 20:48:45 -0000       1.4
+++ src/usbs_upd985xx.c 22 Jan 2003 10:37:18 -0000
@@ -1502,6 +1502,8 @@
             // These stalls will be cleared automaticaly by the next
             // setup packet.
             *EP0_CR     |= (EP0_CR_ISS | EP0_CR_OSS); FLUSH_IBUS();
+            // Start a receive for the next control message
+            ep0_start_rx(8);
         } else {
             // The control request has been handled. Is there any more
             // data to be transferred?