From 3c194923154132836d143d9ba37f5ee94d790c75 Mon Sep 17 00:00:00 2001
From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Fri, 24 May 2019 18:03:39 +0900
Subject: [PATCH] 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>
---
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 791efa5585c2a..8a7da86650ea3 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,
--
2.30.2