linux/drivers/media
Clemens Ladisch db5d247ae8 firewire: fix use of multiple AV/C devices, allow multiple FCP listeners
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: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (changelog, rebased, whitespace)
2009-12-29 19:58:16 +01:00
..
common V4L/DVB (13612): IR: Move common IR code to drivers/media/IR 2009-12-16 00:18:42 -02:00
dvb firewire: fix use of multiple AV/C devices, allow multiple FCP listeners 2009-12-29 19:58:16 +01:00
IR V4L/DVB (13617): ir: move input_register_device() to happen inside ir_input_register() 2009-12-16 00:18:45 -02:00
radio V4L/DVB (13690): radio/si470x: #include <sched.h> 2009-12-16 09:28:00 -02:00
video media video cx23888 driver: ported to new kfifo API 2009-12-22 14:17:57 -08:00
Kconfig V4L/DVB (13612): IR: Move common IR code to drivers/media/IR 2009-12-16 00:18:42 -02:00
Makefile V4L/DVB (13612): IR: Move common IR code to drivers/media/IR 2009-12-16 00:18:42 -02:00