On Wed, 9 May 2012, Sergio Correia wrote: > Hi Alan, Sarah, > > On Wed, May 9, 2012 at 10:33 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > On Tue, 8 May 2012, Sarah Sharp wrote: > > > >> On Tue, May 08, 2012 at 03:26:17PM -0700, Sarah Sharp wrote: > >> > Yeah, it looks like the Fresco Logic host controller is reporting a > >> > successful completion status, with an untransferred length of 8 bytes, > >> > which is a contradiction. �Since we can tell from the EHCI logs that it > >> > actually should be reporting a short packet status, I think we should be > >> > able to just add a quirk for it, to trust the untransferred length. > >> > > >> > I wonder if this is just for short control transfers, or if they have > >> > this bug for other endpoint types? > >> > >> Er, I meant "short isochronous transfers", not short control transfers. > > > > It should be easy enough to find out, by plugging in a USB drive. �Most > > of them generate short bulk transfers during SCSI initialization. > > > > Alan Stern > > > > I have an external USB 2.0 disk and also a USB 2.0 drive handy. Shall > I try the 1st patch (short packet completion debugging) with them on > the USB 3.0 port to check if it reports something else strange? Go ahead. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
