From f3d0e78d2e733176c2b0d23e7a7d871c7a33c2d6 Mon Sep 17 00:00:00 2001 From: "Lendacky, Thomas" Date: Tue, 5 Aug 2014 13:30:38 -0500 Subject: [PATCH] amd-xgbe: Use dma_set_mask_and_coherent to set DMA mask Use the dma_set_mask_and_coherent function to set the DMA mask rather than setting the DMA mask fields directly. This was originally done to work around a bug in the arm64 DMA support when RAM started above the 4GB boundary which has since been fixed. Signed-off-by: Tom Lendacky Signed-off-by: David S. Miller --- drivers/net/ethernet/amd/xgbe/xgbe-main.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-main.c b/drivers/net/ethernet/amd/xgbe/xgbe-main.c index ec977d3..8aa6a93 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-main.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-main.c @@ -303,8 +303,11 @@ static int xgbe_probe(struct platform_device *pdev) /* Set the DMA mask */ if (!dev->dma_mask) dev->dma_mask = &dev->coherent_dma_mask; - *(dev->dma_mask) = DMA_BIT_MASK(40); - dev->coherent_dma_mask = DMA_BIT_MASK(40); + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40)); + if (ret) { + dev_err(dev, "dma_set_mask_and_coherent failed\n"); + goto err_io; + } if (of_property_read_bool(dev->of_node, "dma-coherent")) { pdata->axdomain = XGBE_DMA_OS_AXDOMAIN; -- 2.7.4