diff --git a/sound/firewire/amdtp-am824.c b/sound/firewire/amdtp-am824.c
index b849f529fcba..3660c312bf33 100644
--- a/sound/firewire/amdtp-am824.c
+++ b/sound/firewire/amdtp-am824.c
@@ -344,10 +344,8 @@ static void read_midi_messages(struct amdtp_stream *s, __be32 *buffer,
 	}
 }
 
-static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
-					    const struct pkt_desc *desc,
-					    unsigned int count,
-					    struct snd_pcm_substream *pcm)
+static void process_it_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	struct amdtp_am824 *p = s->protocol;
 	unsigned int pcm_frames = 0;
@@ -371,14 +369,10 @@ static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
 
 		desc = amdtp_stream_next_packet_desc(s, desc);
 	}
-
-	return pcm_frames;
 }
 
-static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
-					    const struct pkt_desc *desc,
-					    unsigned int count,
-					    struct snd_pcm_substream *pcm)
+static void process_ir_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	struct amdtp_am824 *p = s->protocol;
 	unsigned int pcm_frames = 0;
@@ -400,8 +394,6 @@ static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
 
 		desc = amdtp_stream_next_packet_desc(s, desc);
 	}
-
-	return pcm_frames;
 }
 
 /**
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c
index 453751e4fef8..06a24a7f63c1 100644
--- a/sound/firewire/amdtp-stream.c
+++ b/sound/firewire/amdtp-stream.c
@@ -1043,7 +1043,7 @@ static void process_ctx_payloads(struct amdtp_stream *s,
 	int i;
 
 	pcm = READ_ONCE(s->pcm);
-	(void)s->process_ctx_payloads(s, desc, count, pcm);
+	s->process_ctx_payloads(s, desc, count, pcm);
 
 	if (pcm) {
 		unsigned int data_block_count = 0;
diff --git a/sound/firewire/amdtp-stream.h b/sound/firewire/amdtp-stream.h
index 35b48f9ddbf7..b7ff44751ab9 100644
--- a/sound/firewire/amdtp-stream.h
+++ b/sound/firewire/amdtp-stream.h
@@ -107,11 +107,10 @@ struct pkt_desc {
 };
 
 struct amdtp_stream;
-typedef unsigned int (*amdtp_stream_process_ctx_payloads_t)(
-						struct amdtp_stream *s,
-						const struct pkt_desc *desc,
-						unsigned int count,
-						struct snd_pcm_substream *pcm);
+typedef void (*amdtp_stream_process_ctx_payloads_t)(struct amdtp_stream *s,
+						    const struct pkt_desc *desc,
+						    unsigned int count,
+						    struct snd_pcm_substream *pcm);
 
 struct amdtp_domain;
 struct amdtp_stream {
diff --git a/sound/firewire/digi00x/amdtp-dot.c b/sound/firewire/digi00x/amdtp-dot.c
index b3f67af2d3b1..7db0024495b7 100644
--- a/sound/firewire/digi00x/amdtp-dot.c
+++ b/sound/firewire/digi00x/amdtp-dot.c
@@ -341,10 +341,8 @@ void amdtp_dot_midi_trigger(struct amdtp_stream *s, unsigned int port,
 		WRITE_ONCE(p->midi[port], midi);
 }
 
-static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
-					    const struct pkt_desc *desc,
-					    unsigned int count,
-					    struct snd_pcm_substream *pcm)
+static void process_ir_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	unsigned int pcm_frames = 0;
 	int i;
@@ -362,14 +360,10 @@ static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
 
 		desc = amdtp_stream_next_packet_desc(s, desc);
 	}
-
-	return pcm_frames;
 }
 
-static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
-					    const struct pkt_desc *desc,
-					    unsigned int count,
-					    struct snd_pcm_substream *pcm)
+static void process_it_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	unsigned int pcm_frames = 0;
 	int i;
@@ -390,8 +384,6 @@ static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
 
 		desc = amdtp_stream_next_packet_desc(s, desc);
 	}
-
-	return pcm_frames;
 }
 
 int amdtp_dot_init(struct amdtp_stream *s, struct fw_unit *unit,
diff --git a/sound/firewire/fireface/amdtp-ff.c b/sound/firewire/fireface/amdtp-ff.c
index 27943b7f86fa..76c9d33ed572 100644
--- a/sound/firewire/fireface/amdtp-ff.c
+++ b/sound/firewire/fireface/amdtp-ff.c
@@ -112,10 +112,8 @@ int amdtp_ff_add_pcm_hw_constraints(struct amdtp_stream *s,
 	return amdtp_stream_add_pcm_hw_constraints(s, runtime);
 }
 
-static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
-					   const struct pkt_desc *desc,
-					   unsigned int count,
-					   struct snd_pcm_substream *pcm)
+static void process_it_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	unsigned int pcm_frames = 0;
 	int i;
@@ -133,14 +131,10 @@ static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
 
 		desc = amdtp_stream_next_packet_desc(s, desc);
 	}
-
-	return pcm_frames;
 }
 
-static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
-					    const struct pkt_desc *desc,
-					    unsigned int count,
-					    struct snd_pcm_substream *pcm)
+static void process_ir_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	unsigned int pcm_frames = 0;
 	int i;
@@ -156,8 +150,6 @@ static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
 
 		desc = amdtp_stream_next_packet_desc(s, desc);
 	}
-
-	return pcm_frames;
 }
 
 int amdtp_ff_init(struct amdtp_stream *s, struct fw_unit *unit,
diff --git a/sound/firewire/motu/amdtp-motu.c b/sound/firewire/motu/amdtp-motu.c
index 4153527b5e08..39ed57d2c5a0 100644
--- a/sound/firewire/motu/amdtp-motu.c
+++ b/sound/firewire/motu/amdtp-motu.c
@@ -328,10 +328,8 @@ static void cache_event_offsets(struct amdtp_motu_cache *cache, const __be32 *bu
 	cache->tx_cycle_count = (cache->tx_cycle_count + 1) % CYCLES_PER_SECOND;
 }
 
-static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
-					    const struct pkt_desc *desc,
-					    unsigned int count,
-					    struct snd_pcm_substream *pcm)
+static void process_ir_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	struct snd_motu *motu = container_of(s, struct snd_motu, tx_stream);
 	struct amdtp_motu *p = s->protocol;
@@ -370,8 +368,6 @@ static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
 	if (trace_data_block_sph_enabled() ||
 	    trace_data_block_message_enabled())
 		probe_tracepoints_events(s, desc, count);
-
-	return pcm_frames;
 }
 
 static void write_sph(struct amdtp_motu_cache *cache, __be32 *buffer, unsigned int data_blocks,
@@ -396,10 +392,8 @@ static void write_sph(struct amdtp_motu_cache *cache, __be32 *buffer, unsigned i
 	cache->rx_cycle_count = (cache->rx_cycle_count + 1) % CYCLES_PER_SECOND;
 }
 
-static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
-					    const struct pkt_desc *desc,
-					    unsigned int count,
-					    struct snd_pcm_substream *pcm)
+static void process_it_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	struct amdtp_motu *p = s->protocol;
 	const struct pkt_desc *cursor = desc;
@@ -435,8 +429,6 @@ static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
 	if (trace_data_block_sph_enabled() ||
 	    trace_data_block_message_enabled())
 		probe_tracepoints_events(s, desc, count);
-
-	return pcm_frames;
 }
 
 int amdtp_motu_init(struct amdtp_stream *s, struct fw_unit *unit,
diff --git a/sound/firewire/tascam/amdtp-tascam.c b/sound/firewire/tascam/amdtp-tascam.c
index bb4cf2d26d1b..0b42d6559008 100644
--- a/sound/firewire/tascam/amdtp-tascam.c
+++ b/sound/firewire/tascam/amdtp-tascam.c
@@ -176,10 +176,8 @@ static void read_status_messages(struct amdtp_stream *s,
 	}
 }
 
-static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
-					    const struct pkt_desc *desc,
-					    unsigned int count,
-					    struct snd_pcm_substream *pcm)
+static void process_ir_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	unsigned int pcm_frames = 0;
 	int i;
@@ -197,14 +195,10 @@ static unsigned int process_ir_ctx_payloads(struct amdtp_stream *s,
 
 		desc = amdtp_stream_next_packet_desc(s, desc);
 	}
-
-	return pcm_frames;
 }
 
-static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
-					    const struct pkt_desc *desc,
-					    unsigned int count,
-					    struct snd_pcm_substream *pcm)
+static void process_it_ctx_payloads(struct amdtp_stream *s, const struct pkt_desc *desc,
+				    unsigned int count, struct snd_pcm_substream *pcm)
 {
 	unsigned int pcm_frames = 0;
 	int i;
@@ -222,8 +216,6 @@ static unsigned int process_it_ctx_payloads(struct amdtp_stream *s,
 
 		desc = amdtp_stream_next_packet_desc(s, desc);
 	}
-
-	return pcm_frames;
 }
 
 int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit,