ALSA: firewire-lib: fix data block counter for incoming packet without CIP header

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@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c
index 791efa5585c2a051638844e3c7c75d1fe6dbc826..8a7da86650ea3fd7c3c30d7b088f9b2fc9d1c782 100644 (file)
--- 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,