4 files changed, 8 insertions, 19 deletions

diff --git a/sound/firewire/amdtp.c b/sound/firewire/amdtp.c
index 3badc70124ab..ef399cadb8a5 100644
--- a/sound/firewire/amdtp.c
+++ b/sound/firewire/amdtp.c
@@ -21,7 +21,13 @@
 #define CYCLES_PER_SECOND	8000
 #define TICKS_PER_SECOND	(TICKS_PER_CYCLE * CYCLES_PER_SECOND)
 
-#define TRANSFER_DELAY_TICKS	0x2e00 /* 479.17 µs */
+/*
+ * Several devices look only at the first eight data blocks.
+ * In any case, this is more than enough for the MIDI data rate.
+ */
+#define MAX_MIDI_RX_BLOCKS	8
+
+#define TRANSFER_DELAY_TICKS	0x2e00 /* 479.17 µs */
 
 /* isochronous header parameters */
 #define ISO_DATA_LENGTH_SHIFT	16
@@ -78,8 +84,6 @@ int amdtp_stream_init(struct amdtp_stream *s, struct fw_unit *unit,
 	s->callbacked = false;
 	s->sync_slave = NULL;
 
-	s->rx_blocks_for_midi = UINT_MAX;
-
 	return 0;
 }
 EXPORT_SYMBOL(amdtp_stream_init);
@@ -474,7 +478,7 @@ static void amdtp_fill_midi(struct amdtp_stream *s,
 		b = (u8 *)&buffer[s->midi_position];
 
 		port = (s->data_block_counter + f) % 8;
-		if ((f >= s->rx_blocks_for_midi) ||
+		if ((f >= MAX_MIDI_RX_BLOCKS) ||
 		    (s->midi[port] == NULL) ||
 		    (snd_rawmidi_transmit(s->midi[port], b + 1, 1) <= 0))
 			b[0] = 0x80;
diff --git a/sound/firewire/amdtp.h b/sound/firewire/amdtp.h
index e6e8926275b0..cd4c4dfb3951 100644
--- a/sound/firewire/amdtp.h
+++ b/sound/firewire/amdtp.h
@@ -152,9 +152,6 @@ struct amdtp_stream {
 	/* quirk: fixed interval of dbc between previos/current packets. */
 	unsigned int tx_dbc_interval;
 
-	/* quirk: the first count of data blocks in an rx packet for MIDI */
-	unsigned int rx_blocks_for_midi;
-
 	bool callbacked;
 	wait_queue_head_t callback_wait;
 	struct amdtp_stream *sync_slave;
diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c
index 1aab0a32870c..0ebcabfdc7ce 100644
--- a/sound/firewire/bebob/bebob_stream.c
+++ b/sound/firewire/bebob/bebob_stream.c
@@ -484,13 +484,6 @@ int snd_bebob_stream_init_duplex(struct snd_bebob *bebob)
 		amdtp_stream_destroy(&bebob->rx_stream);
 		destroy_both_connections(bebob);
 	}
-	/*
-	 * The firmware for these devices ignore MIDI messages in more than
-	 * first 8 data blocks of an received AMDTP packet.
-	 */
-	if (bebob->spec == &maudio_fw410_spec ||
-	    bebob->spec == &maudio_special_spec)
-		bebob->rx_stream.rx_blocks_for_midi = 8;
 end:
 	return err;
 }
diff --git a/sound/firewire/fireworks/fireworks_stream.c b/sound/firewire/fireworks/fireworks_stream.c
index b985fc5ebdc6..4f440e163667 100644
--- a/sound/firewire/fireworks/fireworks_stream.c
+++ b/sound/firewire/fireworks/fireworks_stream.c
@@ -179,11 +179,6 @@ int snd_efw_stream_init_duplex(struct snd_efw *efw)
 		destroy_stream(efw, &efw->tx_stream);
 		goto end;
 	}
-	/*
-	 * Fireworks ignores MIDI messages in more than first 8 data
-	 * blocks of an received AMDTP packet.
-	 */
-	efw->rx_stream.rx_blocks_for_midi = 8;
 
 	/* set IEC61883 compliant mode (actually not fully compliant...) */
 	err = snd_efw_command_set_tx_mode(efw, SND_EFW_TRANSPORT_MODE_IEC61883);