diff options
| -rw-r--r-- | sound/firewire/oxfw/oxfw-scs1x.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/firewire/oxfw/oxfw-scs1x.c b/sound/firewire/oxfw/oxfw-scs1x.c index f7ac1243ec94..72446ac33ea7 100644 --- a/sound/firewire/oxfw/oxfw-scs1x.c +++ b/sound/firewire/oxfw/oxfw-scs1x.c @@ -31,6 +31,7 @@ struct fw_scs1x { u8 buffer[HSS1394_MAX_PACKET_SIZE]; bool transaction_running; struct fw_transaction transaction; + unsigned int transaction_bytes; struct fw_device *fw_dev; }; @@ -125,8 +126,8 @@ static void scs_write_callback(struct fw_card *card, int rcode, { struct fw_scs1x *scs = callback_data; - if (rcode == RCODE_GENERATION) - ; /* TODO: retry this packet */ + if (rcode != RCODE_GENERATION) + scs->transaction_bytes = 0; scs->transaction_running = false; schedule_work(&scs->work); @@ -183,6 +184,9 @@ static void scs_output_work(struct work_struct *work) return; } + if (scs->transaction_bytes > 0) + goto retry; + i = scs->output_bytes; for (;;) { if (snd_rawmidi_transmit(stream, &byte, 1) != 1) { @@ -253,13 +257,16 @@ static void scs_output_work(struct work_struct *work) scs->output_bytes = 1; scs->output_escaped = false; + scs->transaction_bytes = i; +retry: scs->transaction_running = true; generation = scs->fw_dev->generation; smp_rmb(); /* node_id vs. generation */ fw_send_request(scs->fw_dev->card, &scs->transaction, TCODE_WRITE_BLOCK_REQUEST, scs->fw_dev->node_id, generation, scs->fw_dev->max_speed, HSS1394_ADDRESS, - scs->buffer, i, scs_write_callback, scs); + scs->buffer, scs->transaction_bytes, + scs_write_callback, scs); } static int midi_capture_open(struct snd_rawmidi_substream *stream) @@ -309,6 +316,7 @@ static void midi_playback_trigger(struct snd_rawmidi_substream *stream, int up) scs->output_bytes = 1; scs->output_escaped = false; scs->output_idle = false; + scs->transaction_bytes = 0; ACCESS_ONCE(scs->output) = stream; schedule_work(&scs->work); |