diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2007-05-07 03:28:53 -0400 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2007-05-11 10:56:17 -0400 |
| commit | d05cc104320210e1c38ff9675c5038cffb2d86dc (patch) | |
| tree | 2d2fecd77706207c66e5ae174374a28ec96e8ae1 /mm/backing-dev.c | |
| parent | a91214589e6527b18f52bc0b31253f9dfb4665e6 (diff) | |
[ALSA] usb-audio: work around broken M-Audio MidiSport Uno firmware
The firmware of the M-Audio USB Uno MIDI Interface has, at least in
hardware revision 1.25, a bug that garbles its USB output. When it
receives a Note On MIDI message that uses running status, the resulting
USB MIDI packet has a wrong CIN (4 instead of 9) and a wrong length
(2 bytes, the status byte is still missing).
This patch adds a workaround to track the CINs and the MIDI messages of
received USB MIDI packets to detect whether a packet with CIN 4 is a
correct SysEx packet or a buggy running status packet.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'mm/backing-dev.c')
0 files changed, 0 insertions, 0 deletions