[PATCH -next 01/26] powerpc: Use dma_zalloc_coherent

[Joe Perches]

Use the zeroing function instead of dma_alloc_coherent & memset(,0,)

Signed-off-by: Joe Perches <j...@perches.com>
---
 arch/powerpc/platforms/pasemi/dma_lib.c | 8 +++-----
 arch/powerpc/sysdev/fsl_rmu.c           | 9 ++++-----
 2 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/arch/powerpc/platforms/pasemi/dma_lib.c 
b/arch/powerpc/platforms/pasemi/dma_lib.c
index aafa01ba..52b391f 100644
--- a/arch/powerpc/platforms/pasemi/dma_lib.c
+++ b/arch/powerpc/platforms/pasemi/dma_lib.c
@@ -255,15 +255,13 @@ int pasemi_dma_alloc_ring(struct pasemi_dmachan *chan, 
int ring_size)
 
        chan->ring_size = ring_size;
 
-       chan->ring_virt = dma_alloc_coherent(&dma_pdev->dev,
-                                            ring_size * sizeof(u64),
-                                            &chan->ring_dma, GFP_KERNEL);
+       chan->ring_virt = dma_zalloc_coherent(&dma_pdev->dev,
+                                             ring_size * sizeof(u64),
+                                             &chan->ring_dma, GFP_KERNEL);
 
        if (!chan->ring_virt)
                return -ENOMEM;
 
-       memset(chan->ring_virt, 0, ring_size * sizeof(u64));
-
        return 0;
 }
 EXPORT_SYMBOL(pasemi_dma_alloc_ring);
diff --git a/arch/powerpc/sysdev/fsl_rmu.c b/arch/powerpc/sysdev/fsl_rmu.c
index b48197a..34b49fc 100644
--- a/arch/powerpc/sysdev/fsl_rmu.c
+++ b/arch/powerpc/sysdev/fsl_rmu.c
@@ -744,15 +744,14 @@ fsl_open_outb_mbox(struct rio_mport *mport, void *dev_id, 
int mbox, int entries)
        }
 
        /* Initialize outbound message descriptor ring */
-       rmu->msg_tx_ring.virt = dma_alloc_coherent(priv->dev,
-                               rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE,
-                               &rmu->msg_tx_ring.phys, GFP_KERNEL);
+       rmu->msg_tx_ring.virt = dma_zalloc_coherent(priv->dev,
+                                                   rmu->msg_tx_ring.size * 
RIO_MSG_DESC_SIZE,
+                                                   &rmu->msg_tx_ring.phys,
+                                                   GFP_KERNEL);
        if (!rmu->msg_tx_ring.virt) {
                rc = -ENOMEM;
                goto out_dma;
        }
-       memset(rmu->msg_tx_ring.virt, 0,
-                       rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE);
        rmu->msg_tx_ring.tx_slot = 0;
 
        /* Point dequeue/enqueue pointers at first entry in ring */
-- 
1.8.1.2.459.gbcd45b4.dirty

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