[PATCH] net: ethernet: Use dma_set_mask_and_coherent to set DMA mask

[zhangheng]

Many drivers still have two explicit calls of dma_set_mask() and
dma_set_coherent_mask().

Let's simplify with dma_set_mask_and_coherent().

Signed-off-by: zhangheng <zhangheng@xxxxxxxxxx>

---
change for v2
        - Update commit message: Add why do this

 drivers/net/ethernet/altera/altera_tse_main.c | 7 ++-----
 drivers/net/ethernet/atheros/atlx/atl2.c      | 3 +--
 drivers/net/ethernet/micrel/ksz884x.c         | 3 +--
 drivers/net/ethernet/rdc/r6040.c              | 7 +------
 drivers/net/ethernet/silan/sc92031.c          | 6 +-----
 5 files changed, 6 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
index 3f6204de9e6b..ad58e589a723 100644
--- a/drivers/net/ethernet/altera/altera_tse_main.c
+++ b/drivers/net/ethernet/altera/altera_tse_main.c
@@ -1219,11 +1219,8 @@ static int altera_tse_probe(struct platform_device *pdev)
 		goto err_free_netdev;
 	}
 
-	if (!dma_set_mask(priv->device, DMA_BIT_MASK(priv->dmaops->dmamask))) {
-		dma_set_coherent_mask(priv->device,
-				      DMA_BIT_MASK(priv->dmaops->dmamask));
-	} else if (!dma_set_mask(priv->device, DMA_BIT_MASK(32))) {
-		dma_set_coherent_mask(priv->device, DMA_BIT_MASK(32));
+	if (dma_set_mask_and_coherent(priv->device, DMA_BIT_MASK(priv->dmaops->dmamask))) {
+		dma_set_mask_and_coherent(priv->device, DMA_BIT_MASK(32));
 	} else {
 		ret = -EIO;
 		goto err_free_netdev;
diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c
index fa9a4919f25d..aa3aba4a59f3 100644
--- a/drivers/net/ethernet/atheros/atlx/atl2.c
+++ b/drivers/net/ethernet/atheros/atlx/atl2.c
@@ -1329,8 +1329,7 @@ static int atl2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	 * until the kernel has the proper infrastructure to support 64-bit DMA
 	 * on these devices.
 	 */
-	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)) &&
-	    dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32))) {
+	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {
 		printk(KERN_ERR "atl2: No usable DMA configuration, aborting\n");
 		err = -EIO;
 		goto err_dma;
diff --git a/drivers/net/ethernet/micrel/ksz884x.c b/drivers/net/ethernet/micrel/ksz884x.c
index dc1d9f774565..d74c319852a5 100644
--- a/drivers/net/ethernet/micrel/ksz884x.c
+++ b/drivers/net/ethernet/micrel/ksz884x.c
@@ -6559,8 +6559,7 @@ static int pcidev_init(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	result = -ENODEV;
 
-	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)) ||
-	    dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)))
+	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
 		return result;
 
 	reg_base = pci_resource_start(pdev, 0);
diff --git a/drivers/net/ethernet/rdc/r6040.c b/drivers/net/ethernet/rdc/r6040.c
index f4d434c379e7..a3e65ccd48ce 100644
--- a/drivers/net/ethernet/rdc/r6040.c
+++ b/drivers/net/ethernet/rdc/r6040.c
@@ -1041,12 +1041,7 @@ static int r6040_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		goto err_out;
 
 	/* this should always be supported */
-	err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
-	if (err) {
-		dev_err(&pdev->dev, "32-bit PCI DMA addresses not supported by the card\n");
-		goto err_out_disable_dev;
-	}
-	err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 	if (err) {
 		dev_err(&pdev->dev, "32-bit PCI DMA addresses not supported by the card\n");
 		goto err_out_disable_dev;
diff --git a/drivers/net/ethernet/silan/sc92031.c b/drivers/net/ethernet/silan/sc92031.c
index ff4197f5e46d..228f2608d288 100644
--- a/drivers/net/ethernet/silan/sc92031.c
+++ b/drivers/net/ethernet/silan/sc92031.c
@@ -1409,11 +1409,7 @@ static int sc92031_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	pci_set_master(pdev);
 
-	err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
-	if (unlikely(err < 0))
-		goto out_set_dma_mask;
-
-	err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
 	if (unlikely(err < 0))
 		goto out_set_dma_mask;
 
-- 
2.45.2