diff --git a/sound/firewire/motu/motu-pcm.c b/sound/firewire/motu/motu-pcm.c
index b24bb87..8e14373 100644
--- a/sound/firewire/motu/motu-pcm.c
+++ b/sound/firewire/motu/motu-pcm.c
@@ -26,8 +26,7 @@ static int motu_rate_constraint(struct snd_pcm_hw_params *params,
 		rate = snd_motu_clock_rates[i];
 		mode = i / 2;
 
-		pcm_channels = formats->fixed_part_pcm_chunks[mode] +
-			       formats->differed_part_pcm_chunks[mode];
+		pcm_channels = formats->pcm_chunks[mode];
 		if (!snd_interval_test(c, pcm_channels))
 			continue;
 
@@ -59,8 +58,7 @@ static int motu_channels_constraint(struct snd_pcm_hw_params *params,
 		if (!snd_interval_test(r, rate))
 			continue;
 
-		pcm_channels = formats->fixed_part_pcm_chunks[mode] +
-			       formats->differed_part_pcm_chunks[mode];
+		pcm_channels = formats->pcm_chunks[mode];
 		channels.min = min(channels.min, pcm_channels);
 		channels.max = max(channels.max, pcm_channels);
 	}
@@ -82,8 +80,7 @@ static void limit_channels_and_rates(struct snd_motu *motu,
 		rate = snd_motu_clock_rates[i];
 		mode = i / 2;
 
-		pcm_channels = formats->fixed_part_pcm_chunks[mode] +
-			       formats->differed_part_pcm_chunks[mode];
+		pcm_channels = formats->pcm_chunks[mode];
 		if (pcm_channels == 0)
 			continue;
 
diff --git a/sound/firewire/motu/motu-proc.c b/sound/firewire/motu/motu-proc.c
index 71d0260..f009cf7 100644
--- a/sound/firewire/motu/motu-proc.c
+++ b/sound/firewire/motu/motu-proc.c
@@ -51,7 +51,7 @@ static void proc_read_format(struct snd_info_entry *entry,
 	if (snd_motu_protocol_cache_packet_formats(motu) < 0)
 		return;
 
-	snd_iprintf(buffer, "tx:\tmsg\tfixed\tdiffered\n");
+	snd_iprintf(buffer, "tx:\tmsg\tfixed\ttotal\n");
 	for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
 		mode = i >> 1;
 
@@ -60,11 +60,11 @@ static void proc_read_format(struct snd_info_entry *entry,
 			    "%u:\t%u\t%u\t%u\n",
 			    snd_motu_clock_rates[i],
 			    formats->msg_chunks,
-			    formats->fixed_part_pcm_chunks[mode],
-			    formats->differed_part_pcm_chunks[mode]);
+			    motu->spec->tx_fixed_pcm_chunks[mode],
+			    formats->pcm_chunks[mode]);
 	}
 
-	snd_iprintf(buffer, "rx:\tmsg\tfixed\tdiffered\n");
+	snd_iprintf(buffer, "rx:\tmsg\tfixed\ttotal\n");
 	for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
 		mode = i >> 1;
 
@@ -73,8 +73,8 @@ static void proc_read_format(struct snd_info_entry *entry,
 			    "%u:\t%u\t%u\t%u\n",
 			    snd_motu_clock_rates[i],
 			    formats->msg_chunks,
-			    formats->fixed_part_pcm_chunks[mode],
-			    formats->differed_part_pcm_chunks[mode]);
+			    motu->spec->rx_fixed_pcm_chunks[mode],
+			    formats->pcm_chunks[mode]);
 	}
 }