diff options
Diffstat (limited to 'sound/firewire/bebob/bebob_stream.c')
| -rw-r--r-- | sound/firewire/bebob/bebob_stream.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c index 5e4a61458be2..7ac0d9f495c4 100644 --- a/sound/firewire/bebob/bebob_stream.c +++ b/sound/firewire/bebob/bebob_stream.c @@ -658,7 +658,15 @@ int snd_bebob_stream_start_duplex(struct snd_bebob *bebob) if (err < 0) goto error; - err = amdtp_domain_start(&bebob->domain); + // The device postpones start of transmission mostly for 1 sec + // after receives packets firstly. For safe, IR context starts + // 1.5 sec (=12000 cycles) later. This is within 2.0 sec + // (=CALLBACK_TIMEOUT). + // Furthermore, some devices transfer isoc packets with + // discontinuous counter in the beginning of packet streaming. + // The delay has an effect to avoid detection of this + // discontinuity. + err = amdtp_domain_start(&bebob->domain, 12000); if (err < 0) goto error; |