diff --git a/sound/aoa/soundbus/i2sbus/core.c b/sound/aoa/soundbus/i2sbus/core.c
index 467836057ee5..a80d5ea87ccd 100644
--- a/sound/aoa/soundbus/i2sbus/core.c
+++ b/sound/aoa/soundbus/i2sbus/core.c
@@ -47,15 +47,11 @@ static int alloc_dbdma_descriptor_ring(struct i2sbus_dev *i2sdev,
 	/* We use the PCI APIs for now until the generic one gets fixed
 	 * enough or until we get some macio-specific versions
 	 */
-	r->space = dma_alloc_coherent(
-			&macio_get_pci_dev(i2sdev->macio)->dev,
-			r->size,
-			&r->bus_addr,
-			GFP_KERNEL);
+	r->space = dma_zalloc_coherent(&macio_get_pci_dev(i2sdev->macio)->dev,
+				       r->size, &r->bus_addr, GFP_KERNEL);
+	if (!r->space)
+		return -ENOMEM;
 
-	if (!r->space) return -ENOMEM;
-
-	memset(r->space, 0, r->size);
 	r->cmds = (void*)DBDMA_ALIGN(r->space);
 	r->bus_cmd_start = r->bus_addr +
 			   (dma_addr_t)((char*)r->cmds - (char*)r->space);
diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index be1b1aa96b7e..b2c3d0d5dca3 100644
--- a/sound/sparc/dbri.c
+++ b/sound/sparc/dbri.c
@@ -2534,12 +2534,10 @@ static int snd_dbri_create(struct snd_card *card,
 	dbri->op = op;
 	dbri->irq = irq;
 
-	dbri->dma = dma_alloc_coherent(&op->dev,
-				       sizeof(struct dbri_dma),
-				       &dbri->dma_dvma, GFP_ATOMIC);
+	dbri->dma = dma_zalloc_coherent(&op->dev, sizeof(struct dbri_dma),
+					&dbri->dma_dvma, GFP_ATOMIC);
 	if (!dbri->dma)
 		return -ENOMEM;
-	memset((void *)dbri->dma, 0, sizeof(struct dbri_dma));
 
 	dprintk(D_GEN, "DMA Cmd Block 0x%p (0x%08x)\n",
 		dbri->dma, dbri->dma_dvma);