On Wed, Mar 04, 2009 at 04:59:28PM -0500, Alan Stern wrote: > On Wed, 4 Mar 2009, Eric W. Biederman wrote: > > > Greg KH <gregkh@xxxxxxx> writes: > > > > > * Randy Dunlap <randy.dunlap@xxxxxxxxxx> wrote: > > >> Yinghai Lu wrote: > > >> > b. netchip USB debug cable > > >> > > >> http://www.plxtech.com/products/NET2000/NET20DC/default.asp > > > > > > I have reports that the newer version of this device does not work on > > > Linux as it isn't enumeratable as a "real" usb device on one end. > > > > > > I don't have one of these new devices yet to test it out, has anyone > > > else heard of this problem? > > > > With the first generation of devices I remember they were peculiar and > > finicky. I don't recall the exact details but I remember the devices > > able to get into weird states that may resemble what you describe. > > Those devices were a little peculiar in that they were powered only on > one side. That is, they would take bus power only from the right-hand > connector (looking at the face with the PLX logo). So if you plugged > in only the left side, the device would not show up or enumerate. But > if you plugged in both sides, then both of them would enumerate okay. That comment should be in the documentation for ehci early printks too. Sarah Sharp -- 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
