diff options
Diffstat (limited to 'sound/firewire/fireface/ff-protocol-latter.c')
| -rw-r--r-- | sound/firewire/fireface/ff-protocol-latter.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sound/firewire/fireface/ff-protocol-latter.c b/sound/firewire/fireface/ff-protocol-latter.c index 3d12ba5b2a9b..8d6ebb638e93 100644 --- a/sound/firewire/fireface/ff-protocol-latter.c +++ b/sound/firewire/fireface/ff-protocol-latter.c @@ -175,6 +175,7 @@ static int latter_allocate_resources(struct snd_ff *ff, unsigned int rate) static int latter_begin_session(struct snd_ff *ff, unsigned int rate) { + unsigned int generation = ff->rx_resources.generation; unsigned int flag; u32 data; __le32 reg; @@ -189,6 +190,16 @@ static int latter_begin_session(struct snd_ff *ff, unsigned int rate) else return -EINVAL; + if (generation != fw_parent_device(ff->unit)->card->generation) { + err = fw_iso_resources_update(&ff->tx_resources); + if (err < 0) + return err; + + err = fw_iso_resources_update(&ff->rx_resources); + if (err < 0) + return err; + } + data = (ff->tx_resources.channel << 8) | ff->rx_resources.channel; reg = cpu_to_le32(data); err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST, |