[alsa-devel] [PATCH 1/4] ALSA: firewire-lib: fix data block counter for incoming packet without CIP header

[Takashi Sakamoto]

The value of data block counter is not calculated for incoming packet
without CIP header. This commit fixes the bug.

Fixes: 947b437e1263 ("ALSA: firewire-lib: unify packet handler for IR context")
Signed-off-by: Takashi Sakamoto <o-takashi at sakamocchi.jp>
---
 sound/firewire/amdtp-stream.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c
index 791efa5585c2..8a7da86650ea 100644
--- a/sound/firewire/amdtp-stream.c
+++ b/sound/firewire/amdtp-stream.c
@@ -674,6 +674,8 @@ static int handle_in_packet(struct amdtp_stream *s, unsigned int cycle,
 		cip_header = NULL;
 		data_blocks = payload_length / 4 / s->data_block_quadlets;
 		syt = 0;
+		s->data_block_counter =
+				(s->data_block_counter + data_blocks) & 0xff;
 	}
 
 	trace_amdtp_packet(s, cycle, cip_header, payload_length, data_blocks,
-- 
2.20.1