Provided by: pcmcia-cs_3.2.8-5.2ubuntu5_i386 bug


       dummy_cb - CardBus dummy device driver


       insmod dummy_cb.o [pc_debug=n]


       The  dummy_cb  module  is  a sort of "point enabler" for CardBus cards.
       When it is bound to a card, it configures that card, but otherwise does
       not  do  anything.   It  may be useful for cards that have Hot Plug PCI
       kernel drivers, but do not have CardBus client drivers in the pcmcia-cs
       package.  Hot Plug PCI drivers expect the kernel to handle CardBus card
       configuration; instead, drivers in the pcmcia-cs package  rely  on  the
       cb_enabler module to do that.

       To  use dummy_cb, edit /etc/pcmcia/config.opts and add one or more card
       descriptions, like:

              card "Western Digital 1394 Adapter"
                pci 0x1033, 0x00cd
                bind "dummy_cb"

       This will override any driver bindings in the main config file.   After
       restarting   cardmgr,  then,  insertion  of  these  cards  should  load
       dummy_cb.  After that, the Hot Plug PCI driver can be loaded.

       Before ejecting a card using dummy_cb,  it  is  important  to  manually
       unload  the  corresponding  Hot  Plug PCI driver.  Since cardmgr cannot
       notify this sort of driver about removal events, bad things can  happen
       if  the  Hot Plug PCI driver is not unloaded first.  Yes this is rather
       fragile.  Ideally, people will use Hot Plug PCI drivers with the kernel
       PCMCIA  subsystem,  but dummy_cb is meant as a quick fix for situations
       where that is not possible.


              Selects the PCMCIA debugging  level.   This  parameter  is  only
              available  if  the module is compiled with debugging enabled.  A
              non-zero value enables debugging.


       David Hinds -


       cardmgr(8), pcmcia(5).