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

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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>
This commit is contained in:
Joe Perches
2013-03-15 07:23:58 +00:00
committed by David S. Miller
parent 7f9421c264
commit 1f9061d27d
38 changed files with 104 additions and 168 deletions
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4
drivers/net/ethernet/sfc/nic.c
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@@ -305,11 +305,11 @@ int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
unsigned int len)
{
buffer->addr = dma_alloc_coherent(&efx->pci_dev->dev, len,
&buffer->dma_addr, GFP_ATOMIC);
&buffer->dma_addr,
GFP_ATOMIC | __GFP_ZERO);
if (!buffer->addr)
return -ENOMEM;
buffer->len = len;
memset(buffer->addr, 0, len);
return 0;
}