Hi, Could you provide some detailed info about your issue? Such as: kernel version, usb host controller info, and the output of dmesg after the crash. Without this information, no one can help the issue for you. If possible, please enable CONFIG_USB_DEBUG to rebuild kernel, then reproduce the issue and post out the 'dmesg' result after crash. thanks, -- Ming Lei On Mon, Nov 21, 2011 at 6:30 PM, Jasonwu <jason.wu@xxxxxxxxxxxxxxx> wrote: > Hi, > Some move would hangs the USB host. > 1. plugged in USB hub on port (4 ports), with one USB storage device attached > 2. fast plug/unplug USB hub wire, several times. > 3. USB host controller might crash, not able to detect any hub/device anymore > any suggestion i can add to fix this issue? > > Thanks! > > > -- > 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 > -- Ming Lei -- 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