Re: usbtest test-14 failure: MUSBHDRC + Netchip2280

> On Friday 23 March 2007 5:26 am, Pandita, Vikram wrote:
> > Hi
> >
> >   I am testing HS USB HOST controller of OMAP2430 (MUSBHDRC) with
> > Netchip2280 device using usbtest. When I run the test.sh control
test on
> > the OMAP Host, the test 14 fails randomly after some iterations with
> > error no -32.
> 
> Does this help?  Against the current OMAP tree.  If this morphs the
> STALL (-32) into an EREMOTEIO (-121) that may be the same IN DATA ack
> error noted below.
> 

Thanks David for the patch. I had done almost the same fix to proceed.
Thanks Alan for the patch of Netchip. I have put both patches, however
the error still persists. 

On usbtest 14, the IN token sent by MUSBHDRC is being STALL'ed instead
of being NAK'ed by the Netchip device.

Interestingly, if I enable some logs on Netchip driver or Host side, the
test 14 passes. This points to some timing related issue. Is it that
Netchip needs some delay in handling consecutive control transfers? 

I could narrow down to the following netchip code that sets the STALL.
Is that expected behaviour on netchip side?


--- a/drivers/usb/gadget/net2280.c 2007-03-23 16:40:44.000000000 +0530
+++ b/drivers/usb/gadget/net2280.c  2007-03-23 17:19:21.000000000 +0530
@@ -2204,12 +2206,16 @@ static void handle_ep_small (struct net2
                                        && req
                                        && req->req.actual ==
req->req.length)
                                        || !req) {
+printk("\n-->STALL\n");
+#if 0
                                ep->dev->protocol_stall = 1;
+
                                set_halt (ep);
                                ep->stopped = 1;
                                if (req)
                                        done (ep, req, -EOVERFLOW);
                                req = NULL;
+#endif
                        }
                }
        }


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