1. 29 Dec, 2009 1 commit
    • Clemens Ladisch's avatar
      firewire: fix use of multiple AV/C devices, allow multiple FCP listeners · db5d247a
      Clemens Ladisch authored
      Control of more than one AV/C device at once --- e.g. camcorders, tape
      decks, audio devices, TV tuners --- failed or worked only unreliably,
      depending on driver implementation.  This affected kernelspace and
      userspace drivers alike and was caused by firewire-core's inability to
      accept multiple registrations of FCP listeners.
      
      The fix allows multiple address handlers to be registered for the FCP
      command and response registers.  When a request for these registers is
      received, all handlers are invoked, and the Firewire response is
      generated by the core and not by any handler.
      
      The cdev API does not change, i.e., userspace is still expected to send
      a response for FCP requests; this response is silently ignored.
      Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
      Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (changelog, rebased, whitespace)
      db5d247a
  2. 24 Dec, 2009 39 commits