diff --git a/sound/firewire/bebob/bebob.c b/sound/firewire/bebob/bebob.c
index 90e98a6d1546..5938aa325f5e 100644
--- a/sound/firewire/bebob/bebob.c
+++ b/sound/firewire/bebob/bebob.c
@@ -64,6 +64,7 @@ static DECLARE_BITMAP(devices_used, SNDRV_CARDS);
 #define MODEL_MAUDIO_AUDIOPHILE_BOTH	0x00010060
 #define MODEL_MAUDIO_FW1814		0x00010071
 #define MODEL_MAUDIO_PROJECTMIX		0x00010091
+#define MODEL_MAUDIO_PROFIRELIGHTBRIDGE	0x000100a1
 
 static int
 name_device(struct snd_bebob *bebob)
@@ -210,6 +211,13 @@ do_registration(struct work_struct *work)
 	if (err < 0)
 		goto error;
 
+	// M-Audio ProFire Lightbridge has a quirk to transfer packets with discontinuous cycle or
+	// data block counter in early stage of packet streaming. The cycle span from the first
+	// packet with event is variable.
+	if (bebob->entry->vendor_id == VEN_MAUDIO1 &&
+	    bebob->entry->model_id == MODEL_MAUDIO_PROFIRELIGHTBRIDGE)
+		bebob->discontinuity_quirk = true;
+
 	err = snd_bebob_stream_init_duplex(bebob);
 	if (err < 0)
 		goto error;
@@ -476,7 +484,7 @@ static const struct ieee1394_device_id bebob_id_table[] = {
 	/* M-Audio NRV10 */
 	SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x00010081, &maudio_nrv10_spec),
 	/* M-Audio, ProFireLightbridge */
-	SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x000100a1, &spec_normal),
+	SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, MODEL_MAUDIO_PROFIRELIGHTBRIDGE, &spec_normal),
 	/* Firewire 1814 */
 	SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, 0x00010070, NULL),	/* bootloader */
 	SND_BEBOB_DEV_ENTRY(VEN_MAUDIO1, MODEL_MAUDIO_FW1814,
diff --git a/sound/firewire/bebob/bebob.h b/sound/firewire/bebob/bebob.h
index 4e0ed84adbee..cba6793bfdb2 100644
--- a/sound/firewire/bebob/bebob.h
+++ b/sound/firewire/bebob/bebob.h
@@ -115,6 +115,7 @@ struct snd_bebob {
 
 	/* For BeBoB version quirk. */
 	unsigned int version;
+	bool discontinuity_quirk;
 
 	struct amdtp_domain domain;
 };
diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c
index 975670a29a72..91306da1bafe 100644
--- a/sound/firewire/bebob/bebob_stream.c
+++ b/sound/firewire/bebob/bebob_stream.c
@@ -7,7 +7,7 @@
 
 #include "./bebob.h"
 
-#define READY_TIMEOUT_MS	2500
+#define READY_TIMEOUT_MS	4000
 
 /*
  * NOTE;
@@ -644,12 +644,14 @@ int snd_bebob_stream_start_duplex(struct snd_bebob *bebob)
 		if (err < 0)
 			goto error;
 
-		// Some devices transfer isoc packets with discontinuous counter in the beginning
-		// of packet streaming.
-		if (bebob->version < 2)
-			tx_init_skip_cycles = 3200;
+		if (!bebob->discontinuity_quirk)
+			tx_init_skip_cycles = 0;
 		else
 			tx_init_skip_cycles = 16000;
+
+		// MEMO: In the early stage of packet streaming, the device transfers NODATA packets.
+		// After several hundred cycles, it begins to multiplex event into the packet with
+		// syt information.
 		err = amdtp_domain_start(&bebob->domain, tx_init_skip_cycles);
 		if (err < 0)
 			goto error;