26 Feb
2019
26 Feb
'19
6:12 a.m.
On Tue, 26 Feb 2019 05:38:37 +0100, Takashi Sakamoto wrote:
In data blocks of common isochronous packet for MOTU devices, PCM frames are multiplexed in a shape of '24 bit * 4 Audio Pack', described in IEC 61883-6. The frames are not aligned to quadlet.
For capture PCM substream, ALSA firewire-motu driver constructs PCM frames by reading data blocks byte-by-byte. However this operation includes bug for lower byte of the PCM sample. This brings invalid content of the PCM samples.
This commit fixes the bug.
Reported-by: Peter Sjöberg autopeter@gmail.com Cc: stable@vger.kernel.org # v4.12+ Fixes: 4641c9394010 ("ALSA: firewire-motu: add MOTU specific protocol layer") Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp
Applied, thanks.
Takashi