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DMA-API: net: nxp/lpc_eth: use dma_coerce_mask_and_coherent() 

The code sequence:
	pldat->pdev->dev.coherent_dma_mask = 0xFFFFFFFF;
	pldat->pdev->dev.dma_mask = &pldat->pdev->dev.coherent_dma_mask;
bypasses the architectures check on the DMA mask.  It can be replaced
with dma_coerce_mask_and_coherent(), avoiding the direct initialization
of this mask.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2013-06-27 14:03:13 +01:00
parent 07f4450c99
commit b469357f4b
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/nxp/lpc_eth.c
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@ -1399,8 +1399,10 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
} }
if (pldat->dma_buff_base_v == 0) { if (pldat->dma_buff_base_v == 0) {
pldat->pdev->dev.coherent_dma_mask = 0xFFFFFFFF; ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
pldat->pdev->dev.dma_mask = &pldat->pdev->dev.coherent_dma_mask; if (ret)
goto err_out_free_irq;
pldat->dma_buff_size = PAGE_ALIGN(pldat->dma_buff_size); pldat->dma_buff_size = PAGE_ALIGN(pldat->dma_buff_size);
/* Allocate a chunk of memory for the DMA ethernet buffers /* Allocate a chunk of memory for the DMA ethernet buffers