On Mon, 1 Dec 2003, David Brownell wrote:
> > The CSW transfer returned 0 bytes, not 13. Another Genesyslogic bug?
>
> That one sounds somewhat familiar. Like "hardware terminated
> write with ZLP" ... I wonder if maybe just re-reading the CSW
> might show better results. "Device bug" does seem a plausible
> explanation given the facts we've seen; ZLPs aren't supposed to
> be used in such cases.
Here's a quick-and-dirty patch to re-read the CSW. Matthias, when you
have a chance try it out with your EHCI controller and tell us what
happens.
Alan Stern
===== transport.c 1.112 vs edited =====
--- 1.112/drivers/usb/storage/transport.c Fri Sep 26 12:37:45 2003
+++ edited/drivers/usb/storage/transport.c Mon Dec 1 14:06:19 2003
@@ -985,7 +985,7 @@
bcs, US_BULK_CS_WRAP_LEN, NULL);
/* did the attempt to read the CSW fail? */
- if (result == USB_STOR_XFER_STALLED) {
+ if (result == USB_STOR_XFER_STALLED || result == USB_STOR_XFER_SHORT) {
/* get the status again */
US_DEBUGP("Attempting to get CSW (2nd try)...\n");
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