drivers:net: dma_alloc_coherent: use __GFP_ZERO instead of memset(, 0)

Reduce the number of calls required to alloc
a zeroed block of memory.

Trivially reduces overall object size.

Other changes around these removals
o Neaten call argument alignment
o Remove an unnecessary OOM message after dma_alloc_coherent failure
o Remove unnecessary gfp_t stack variable

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/ethernet/sgi/meth.c b/drivers/net/ethernet/sgi/meth.c
index 79ad9c94a21b..4bdbaad9932d 100644
--- a/drivers/net/ethernet/sgi/meth.c
+++ b/drivers/net/ethernet/sgi/meth.c
@@ -213,10 +213,11 @@ static int meth_init_tx_ring(struct meth_private *priv)
 {
         /* Init TX ring */
         priv->tx_ring = dma_alloc_coherent(NULL, TX_RING_BUFFER_SIZE,
-                                           &priv->tx_ring_dma, GFP_ATOMIC);
+                                           &priv->tx_ring_dma,
+                                           GFP_ATOMIC | __GFP_ZERO);
         if (!priv->tx_ring)
                 return -ENOMEM;
-        memset(priv->tx_ring, 0, TX_RING_BUFFER_SIZE);
+
         priv->tx_count = priv->tx_read = priv->tx_write = 0;
         mace->eth.tx_ring_base = priv->tx_ring_dma;
         /* Now init skb save area */