On 10.10.2014 22:01, Tony Lindgren wrote: > * Felipe Balbi <balbi@xxxxxx> [141010 11:51]: >> Hi again, >> >> On Fri, Oct 10, 2014 at 01:47:55PM -0500, Felipe Balbi wrote: >>> I seem to be able to rather easily kill xHCI by just running >>> test.sh/testusb with a USB2 device attached to it (I used my AM437x >>> Starter Kit for the test). >> >> I think Tony mentioned taht it's also pretty easy to break xHCI by >> trying to cold flash an old N900 > > Heh yeah. After upgrading my build box, I noticed few things. > The new mobo came with xchi, and the following broke: > > 1. My old printer MFC-7820N no longer worked for scanning > > 2. Trying to cold flash any omap3 boards over USB stopped working > for most of the time > > 3. Back-ups to a USB drive occasionally started failing > > 4. After disabling xhci in the BIOS, things were still flakey > with ehci > > 5. I ended up installing a usb2.0 ehci pcie card to fix things > Hmm, sounds like it might not only be a xhci issue then. If you for some reason want to enable xhci and try coldflashing n900/use scanner could you enable xhci debugging and send me the output of a failing case? echo -n 'module xhci_hcd =p' > /sys/kernel/debug/dynamic_debug/control -Mathias -- 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
