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 <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files 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 ec977d36063f..8aa6a9353f7b 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;