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>

diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c
index a061b93efe66a29fd663a49bf16d1a510ff0879f..ba3ca18611f7905d559eaec225b6a4ae837c3dda 100644 (file)
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -1399,8 +1399,10 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
        }
 
        if (pldat->dma_buff_base_v == 0) {
-               pldat->pdev->dev.coherent_dma_mask = 0xFFFFFFFF;
-               pldat->pdev->dev.dma_mask = &pldat->pdev->dev.coherent_dma_mask;
+               ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+               if (ret)
+                       goto err_out_free_irq;
+
                pldat->dma_buff_size = PAGE_ALIGN(pldat->dma_buff_size);
 
                /* Allocate a chunk of memory for the DMA ethernet buffers