Re: [PATCH] [musb_hdrc]: fix bug - EOVERFLOW failure when do usb gadget zero test t14

On Mon, Jun 30, 2008 at 10:34:54PM +0800, ext Bryan Wu wrote:
> Yes, without the flush operation. It should always fail.
> --
> root@adam:/home/test# sudo ./src/testusb -D /proc/bus/usb/005/007 -t14
> -c 15000 -s 256 -v 1
> unknown speed   /proc/bus/usb/005/007
> /proc/bus/usb/005/007 test 14 --> 75 (Value too large for defined data type)
> --

Cool, as soon as I get a analyzer, i'll also look at it.

> I have a question about the driver:
> When does the driver ask MUSB to send out the last IN packet of the
> STATS tranfer?
> I think it is automatically controlled by hardware, right? When we
> write DATAEND to CSR0,
> it waits for host IN token and reply a ZERO length packet to host, right?

As soon as I remember, yeah. Done by hw.

There was a known issue when the CSR was 0x77ff (if I'm not wrong, will
look my mails and search for the right flakey csr), but we tested on
omap3 and it didn't seem to be affected.

Maybe blackfin is affected?

> Maybe it is a silicon bug.

Might be, there are so many of them :-p

-- 
	- Balbi
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