tree 56483a3ab88dd00554dbb0bd4e140cad5c5f164b
parent c4d860a0d256663937b51468ea13de3c2cd2a09d
author Takashi Sakamoto <o-takashi@sakamocchi.jp> 1434253776 +0900
committer Takashi Iwai <tiwai@suse.de> 1434368309 +0200

ALSA: bebob: keep duplex streams always to keep internal multiplexer properly

Behringer FCA610 transmits packets with periodic noisy PCM samples
when receiving no streams, and generates a bit noisy sound.

ALSA BeBoB driver is programmed to establish both in/out connections
when starting streaming, then transfers packets as userspace applications
requested. This means that there's a case that one of incoming/outgoing
streams is running, to save CPU and bandwidth usage. Although, it's natural
to start transferring packets in both direction.

This commit makes this driver to keeps duplex streams always.

Tested-by: Kim Tore Jensen <kim@incendio.no>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>