OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ALSA: firewire-lib: schedule work again when MIDI substream has rest of MIDI messages 

Currently, when two MIDI trigger callbacks can be called immediately,
transactions for the second MIDI messages can be postpone till next trigger
callback. This is not good for real-time message transmission.

This commit schedules work again at response handling callback if the
MIDI substream still includes untransferred MIDI messages.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2015-10-09 08:10:27 +09:00 committed by Takashi Iwai
parent d3ef9cb93a
commit e8a40d9bcb
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sound/firewire/lib.c
View File

@ -78,6 +78,9 @@ static void async_midi_port_callback(struct fw_card *card, int rcode,
snd_rawmidi_transmit_ack(substream, port->consume_bytes);
port->idling = true;
if (!snd_rawmidi_transmit_empty(substream))
schedule_work(&port->work);
}
static void midi_port_work(struct work_struct *work)