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, 2 insertions, 3 deletions

diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index 7c361d1db94c..0e817e6084e9 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -780,12 +780,11 @@ static int ftgmac100_alloc_buffers(struct ftgmac100 *priv)
 
         priv->descs = dma_alloc_coherent(priv->dev,
                                          sizeof(struct ftgmac100_descs),
-                                         &priv->descs_dma_addr, GFP_KERNEL);
+                                         &priv->descs_dma_addr,
+                                         GFP_KERNEL | __GFP_ZERO);
         if (!priv->descs)
                 return -ENOMEM;
 
-        memset(priv->descs, 0, sizeof(struct ftgmac100_descs));
-
         /* initialize RX ring */
         ftgmac100_rxdes_set_end_of_ring(&priv->descs->rxdes[RX_QUEUE_ENTRIES - 1]);