diff --git a/sound/isa/gus/gus_dma.c b/sound/isa/gus/gus_dma.c
index 930f4bc..44ee5d3 100644
--- a/sound/isa/gus/gus_dma.c
+++ b/sound/isa/gus/gus_dma.c
@@ -149,10 +149,10 @@
 
 int snd_gf1_dma_init(struct snd_gus_card * gus)
 {
-	down(&gus->dma_mutex);
+	mutex_lock(&gus->dma_mutex);
 	gus->gf1.dma_shared++;
 	if (gus->gf1.dma_shared > 1) {
-		up(&gus->dma_mutex);
+		mutex_unlock(&gus->dma_mutex);
 		return 0;
 	}
 	gus->gf1.interrupt_handler_dma_write = snd_gf1_dma_interrupt;
@@ -160,7 +160,7 @@
 	gus->gf1.dma_data_pcm_last =
 	gus->gf1.dma_data_synth = 
 	gus->gf1.dma_data_synth_last = NULL;
-	up(&gus->dma_mutex);
+	mutex_unlock(&gus->dma_mutex);
 	return 0;
 }
 
@@ -168,7 +168,7 @@
 {
 	struct snd_gf1_dma_block *block;
 
-	down(&gus->dma_mutex);
+	mutex_lock(&gus->dma_mutex);
 	gus->gf1.dma_shared--;
 	if (!gus->gf1.dma_shared) {
 		snd_dma_disable(gus->gf1.dma1);
@@ -185,7 +185,7 @@
 		gus->gf1.dma_data_pcm_last =
 		gus->gf1.dma_data_synth_last = NULL;
 	}
-	up(&gus->dma_mutex);
+	mutex_unlock(&gus->dma_mutex);
 	return 0;
 }