arch/powerpc/fsl_rmu: Use dma_zalloc_coherent

Replaced dma_alloc_coherent + memset with dma_zalloc_coherent

Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>

diff --git a/arch/powerpc/sysdev/fsl_rmu.c b/arch/powerpc/sysdev/fsl_rmu.c
index 88b35a3..8b0ebf3 100644 (file)
--- a/arch/powerpc/sysdev/fsl_rmu.c
+++ b/arch/powerpc/sysdev/fsl_rmu.c
@@ -756,15 +756,13 @@ 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.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 */