[PATCH net-next 01/14] net: atlantic: Remove obsolete 32-bit DMA mask fallback

[Ruizhe Zhou]

The DMA API guarantees support for masks of 32 bits or wider and
explicitly identifies retrying a 32-bit mask after a 64-bit request as
incorrect:
https://docs.kernel.org/core-api/dma-api-howto.html#dma-addressing-capabilities

Remove the obsolete fallback while retaining the error check so that a
genuine DMA setup failure still aborts initialization.

Signed-off-by: Ruizhe Zhou <zhouruizhe@xxxxxxxxxxx>
---
 drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
index 005d6ef4fc36..04b3ef840b36 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
@@ -125,8 +125,6 @@ static int aq_pci_func_init(struct pci_dev *pdev)
 	int err;
 
 	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
-	if (err)
-		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 	if (err) {
 		err = -ENOSR;
 		goto err_exit;
-- 
2.27.0