Am Sonntag, 29. Mai 2005 07:31 schrieb Arlet Ottens:
>
> Hello,
>
> While trying to write a linux driver for my USB device on kernel 2.4.30, I
> noticed that doing an usb_unlink_urb on a bulk IN endpoint, and then
> submitting a new urb later, causes the next packet of data on that
> endpoint to be lost. I see the packet on my USB bus analyzer, but I don't
> get the completion callback in the driver.
>
> It appears to be caused by the fact that Linux has performed the data
> toggle on that endpoint even though there was never any data received.
> When the packet comes in, it decides that it has the wrong toggle bit, and
> discards it.
Which chipset? UHCI, OHCI or EHCI?
Regards
Oliver
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