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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2019-06-28 07:53:31 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-06-28 10:54:52 +0200 |
| commit | 973b059ca98054f9400562ae90bea5069b9b9274 (patch) | |
| tree | 58a232d4f18da1c086e574a80ea55d265afd1d6c /sound/hda/hdac_controller.c | |
| parent | ALSA: firewire-lib: cache next data_block_counter after probing tracepoints e... (diff) | |
| download | linux-973b059ca98054f9400562ae90bea5069b9b9274.tar.xz linux-973b059ca98054f9400562ae90bea5069b9b9274.zip | |
ALSA: firewire-lib: fix to process MIDI conformant data channel for AM824 format
In IEC 61883-6, 8 MIDI data streams are multiplexed into single MIDI
conformant data channel. The index of stream is calculated by modulo 8
of the value of data block counter. Therefore data block processing
layer requires valid value of data block counter.
In recent changes of ALSA IEC 61883-1/6 engine, the value of data block
counter is changed before calling data block processing layer. This
brings miss detection of MIDI messages in non-blocking transmission
method is used.
This commit fixes the bug by changing chached data block counter after
calling data block processing layer.
Fixes: e335425b6596 ("ALSA: firewire-lib: split helper function to check incoming CIP header")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda/hdac_controller.c')
0 files changed, 0 insertions, 0 deletions