]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
ALSA: firewire-lib/fireface: fix initial value of data block counter for IR context...
authorTakashi Sakamoto <o-takashi@sakamocchi.jp>
Sun, 7 Jul 2019 12:07:54 +0000 (21:07 +0900)
committerTakashi Iwai <tiwai@suse.de>
Mon, 8 Jul 2019 12:50:37 +0000 (14:50 +0200)
commit7fbf909668d69d7ab4428f6f55cb53fe4451b9b1
treee5e9ec91cc41cc29aee6199bae32f81a2041107b
parent0ebf3ceb83648f9d149220bf0c6986ddce11361a
ALSA: firewire-lib/fireface: fix initial value of data block counter for IR context with CIP_NO_HEADER

For IR context, ALSA IEC 61883-1/6 engine uses initial value of data
block counter as UINT_MAX, to detect first isochronous packet in the
middle of packet streaming.

At present, when CIP_NO_HEADER is used (i.e. for ALSA fireface driver),
the initial value is used for tracepoints event. 0x00 should be
for the event when the initial value is UINT_MAX because isochronous
packets with CIP_NO_HEADER option has no field for data block count.

This commit fixes the bug.

Fixes: 76864868dbab ("ALSA: firewire-lib: cache next data_block_counter after probing tracepoints event for IR context")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/firewire/amdtp-stream.c