AddDevice routine is not being called.

Discussion in 'Windows Vista Drivers' started by umesh, Jan 13, 2009.

  1. umesh

    umesh Guest

    HI,
    I have one sys file which is responsible for creating a reader ( whenever i
    insert USB into my system).
    PnP Manager call AddDevice routine when it first load/install sys file and
    creates FDO for reader. When i insert a second USB token (with first USB also
    inserted into USB slot), it does not call DriverEntry function, which i
    understand as sys file is already installed. However to my surprise PnP
    Manager does not call AddDevice function for second inserted USB.

    Can any one tell why PnP manager is not able to call AddDevice Function for
    second inserted USB?

    Regards
    Wanni
     
    umesh, Jan 13, 2009
    #1
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  2. Do they have different serial number descriptor?
     
    Alexander Grigoriev, Jan 13, 2009
    #2
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  3. did your driver get installed on the 2nd instance of your reader? you can
    use device manager to verify

    d
     
    Doron Holan [MSFT], Jan 14, 2009
    #3
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