diff --git a/sound/pci/nm256/nm256.c b/sound/pci/nm256/nm256.c
index 06d13e7..50c9f8a 100644
--- a/sound/pci/nm256/nm256.c
+++ b/sound/pci/nm256/nm256.c
@@ -562,7 +562,8 @@
 	struct nm256_stream *s = substream->runtime->private_data;
 	int err = 0;
 
-	snd_assert(s != NULL, return -ENXIO);
+	if (snd_BUG_ON(!s))
+		return -ENXIO;
 
 	spin_lock(&chip->reg_lock);
 	switch (cmd) {
@@ -599,7 +600,8 @@
 	struct nm256_stream *s = substream->runtime->private_data;
 	int err = 0;
 
-	snd_assert(s != NULL, return -ENXIO);
+	if (snd_BUG_ON(!s))
+		return -ENXIO;
 
 	spin_lock(&chip->reg_lock);
 	switch (cmd) {
@@ -635,7 +637,8 @@
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct nm256_stream *s = runtime->private_data;
 
-	snd_assert(s, return -ENXIO);
+	if (snd_BUG_ON(!s))
+		return -ENXIO;
 	s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size);
 	s->period_size = frames_to_bytes(runtime, substream->runtime->period_size);
 	s->periods = substream->runtime->periods;
@@ -660,7 +663,8 @@
 	struct nm256_stream *s = substream->runtime->private_data;
 	unsigned long curp;
 
-	snd_assert(s, return 0);
+	if (snd_BUG_ON(!s))
+		return 0;
 	curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf;
 	curp %= s->dma_size;
 	return bytes_to_frames(substream->runtime, curp);
@@ -673,7 +677,8 @@
 	struct nm256_stream *s = substream->runtime->private_data;
 	unsigned long curp;
 
-	snd_assert(s != NULL, return 0);
+	if (snd_BUG_ON(!s))
+		return 0;
 	curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf;
 	curp %= s->dma_size;	
 	return bytes_to_frames(substream->runtime, curp);