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authorJoe Perches <joe@perches.com>2013-03-15 07:23:58 +0000
committerDavid S. Miller <davem@davemloft.net>2013-03-17 12:50:24 -0400
commit1f9061d27d3d2028805549c4a306324a48209057 (patch)
tree7cfb1a92933f5a9bba6745b68b6a964d9e757ef9 /drivers/net/ethernet/xilinx
parent7f9421c264f8a6e6137027a45ae576517f66fa56 (diff)
downloadop-kernel-dev-1f9061d27d3d2028805549c4a306324a48209057.zip
op-kernel-dev-1f9061d27d3d2028805549c4a306324a48209057.tar.gz
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>
Diffstat (limited to 'drivers/net/ethernet/xilinx')
-rw-r--r--drivers/net/ethernet/xilinx/ll_temac_main.c6
-rw-r--r--drivers/net/ethernet/xilinx/xilinx_axienet_main.c6
2 files changed, 4 insertions, 8 deletions
diff --git a/drivers/net/ethernet/xilinx/ll_temac_main.c b/drivers/net/ethernet/xilinx/ll_temac_main.c
index a64a6d7..4a7c60f 100644
--- a/drivers/net/ethernet/xilinx/ll_temac_main.c
+++ b/drivers/net/ethernet/xilinx/ll_temac_main.c
@@ -245,23 +245,21 @@ static int temac_dma_bd_init(struct net_device *ndev)
/* returns a virtual address and a physical address. */
lp->tx_bd_v = dma_alloc_coherent(ndev->dev.parent,
sizeof(*lp->tx_bd_v) * TX_BD_NUM,
- &lp->tx_bd_p, GFP_KERNEL);
+ &lp->tx_bd_p, GFP_KERNEL | __GFP_ZERO);
if (!lp->tx_bd_v)
goto out;
lp->rx_bd_v = dma_alloc_coherent(ndev->dev.parent,
sizeof(*lp->rx_bd_v) * RX_BD_NUM,
- &lp->rx_bd_p, GFP_KERNEL);
+ &lp->rx_bd_p, GFP_KERNEL | __GFP_ZERO);
if (!lp->rx_bd_v)
goto out;
- memset(lp->tx_bd_v, 0, sizeof(*lp->tx_bd_v) * TX_BD_NUM);
for (i = 0; i < TX_BD_NUM; i++) {
lp->tx_bd_v[i].next = lp->tx_bd_p +
sizeof(*lp->tx_bd_v) * ((i + 1) % TX_BD_NUM);
}
- memset(lp->rx_bd_v, 0, sizeof(*lp->rx_bd_v) * RX_BD_NUM);
for (i = 0; i < RX_BD_NUM; i++) {
lp->rx_bd_v[i].next = lp->rx_bd_p +
sizeof(*lp->rx_bd_v) * ((i + 1) % RX_BD_NUM);
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index c238f98..24748e8 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -204,25 +204,23 @@ static int axienet_dma_bd_init(struct net_device *ndev)
lp->tx_bd_v = dma_alloc_coherent(ndev->dev.parent,
sizeof(*lp->tx_bd_v) * TX_BD_NUM,
&lp->tx_bd_p,
- GFP_KERNEL);
+ GFP_KERNEL | __GFP_ZERO);
if (!lp->tx_bd_v)
goto out;
lp->rx_bd_v = dma_alloc_coherent(ndev->dev.parent,
sizeof(*lp->rx_bd_v) * RX_BD_NUM,
&lp->rx_bd_p,
- GFP_KERNEL);
+ GFP_KERNEL | __GFP_ZERO);
if (!lp->rx_bd_v)
goto out;
- memset(lp->tx_bd_v, 0, sizeof(*lp->tx_bd_v) * TX_BD_NUM);
for (i = 0; i < TX_BD_NUM; i++) {
lp->tx_bd_v[i].next = lp->tx_bd_p +
sizeof(*lp->tx_bd_v) *
((i + 1) % TX_BD_NUM);
}
- memset(lp->rx_bd_v, 0, sizeof(*lp->rx_bd_v) * RX_BD_NUM);
for (i = 0; i < RX_BD_NUM; i++) {
lp->rx_bd_v[i].next = lp->rx_bd_p +
sizeof(*lp->rx_bd_v) *
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