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    Subject2.6.21.5 BUG: USB FTDI FT323BM usb exports duplicate symbols

    Whenever I plug/unplug the FTDI FT232BM USB-RS232 converter, the latest
    2.6.21.5 kernel complains:

    usb 2-1: USB disconnect, address 7
    ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
    ftdi_sio 2-1:1.0: device disconnected
    usb 3-1: new full speed USB device using ohci_hcd and address 43
    usb 3-1: configuration #1 chosen from 1 choice
    ftdi_sio 3-1:1.0: FTDI USB Serial Device converter detected
    drivers/usb/serial/ftdi_sio.c: Detected FT232BM
    usb 3-1: FTDI USB Serial Device converter now attached to ttyUSB0
    usbcore: exports duplicate symbol usb_buffer_unmap_sg (owned by kernel)
    usbserial: exports duplicate symbol usb_serial_port_softint (owned by kernel)
    kobject_add failed for ftdi_sio with -EEXIST, don't try to register things with the same name in the same directory.
    Call Trace:
    [C4A6DE10] [C0009018] show_stack+0x4c/0x1ac (unreliable)
    [C4A6DE50] [C013DF80] kobject_shadow_add+0x160/0x1a4
    [C4A6DE70] [C003A250] mod_sysfs_setup+0x28/0xd4
    [C4A6DE90] [C003B4BC] sys_init_module+0xfc4/0x149c
    [C4A6DF40] [C0002304] ret_from_syscall+0x0/0x3c
    usb 3-1: USB disconnect, address 43
    ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
    ftdi_sio 3-1:1.0: device disconnected
    usb 3-1: new full speed USB device using ohci_hcd and address 44
    usb 3-1: configuration #1 chosen from 1 choice
    ftdi_sio 3-1:1.0: FTDI USB Serial Device converter detected
    drivers/usb/serial/ftdi_sio.c: Detected FT232BM
    usb 3-1: FTDI USB Serial Device converter now attached to ttyUSB0
    usbcore: exports duplicate symbol usb_buffer_unmap_sg (owned by kernel)
    usbserial: exports duplicate symbol usb_serial_port_softint (owned by kernel)
    kobject_add failed for ftdi_sio with -EEXIST, don't try to register things with the same name in the same directory.
    Call Trace:
    [C50BFE10] [C0009018] show_stack+0x4c/0x1ac (unreliable)
    [C50BFE50] [C013DF80] kobject_shadow_add+0x160/0x1a4
    [C50BFE70] [C003A250] mod_sysfs_setup+0x28/0xd4
    [C50BFE90] [C003B4BC] sys_init_module+0xfc4/0x149c
    [C50BFF40] [C0002304] ret_from_syscall+0x0/0x3c

    Is this considered harmful?
    Let me know if you need more debugging information.

    Regards,
    --
    Clemens Koller
    __________________________________
    R&D Imaging Devices
    Anagramm GmbH
    Rupert-Mayer-Straße 45/1
    Linhof Werksgelände
    D-81379 München
    Tel.089-741518-50
    Fax 089-741518-19
    http://www.anagramm-technology.com
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