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  1. #1

    Can not mount 2 usbs same time in embedded linux


    I am developing an ARM9 based device and it uses embedded linux. I designed it based on a reference architecture and the architecture is ok. The device has 2 usb high speed host ports (say port1 and port2).
    It seems that only one port can be used at a given instance.With a usb flash drive attached to port1 it works perfectly and ehenever I mount other flash in to port2 the port1 stops working(automatically unmount) and port2 flash starts working.

    When I mount a flash in to port2 only, then it works perfectly.But if I add another in to port1 it is not mounted.

    Is this a issue with kernel or drivers or anything else. Can someone help me

    thank you.

  2. #2
    Linux Guru Rubberman's Avatar
    Join Date
    Apr 2009
    I can be found either 40 miles west of Chicago, in Chicago, or in a galaxy far, far away.
    It sounds like there may be a hardware problem. I use an ARM9 board running Debian for embedded development that also has dual USB 2.x ports, and it works like a charm.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

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