sh_eth: Fix DMA-API usage for RX buffers
authorBen Hutchings <ben.hutchings@codethink.co.uk>
Tue, 27 Jan 2015 00:50:24 +0000 (00:50 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 27 Jan 2015 08:18:54 +0000 (00:18 -0800)
- Use the return value of dma_map_single(), rather than calling
  virt_to_page() separately
- Check for mapping failue
- Call dma_unmap_single() rather than dma_sync_single_for_cpu()

Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/renesas/sh_eth.c

Simple merge