diff mbox series

[3/8] pdc_adma: use dma_set_mask_and_coherent

Message ID 20190624071224.24019-4-hch@lst.de
State Not Applicable
Delegated to: David Miller
Headers show
Series [1/8] acard_ahci: use dma_set_mask_and_coherent | expand

Commit Message

Christoph Hellwig June 24, 2019, 7:12 a.m. UTC 
Use the dma_set_mask_and_coherent helper to set the DMA mask.  Rely
on the relatively recent change that setting a larger than required
mask will never fail to avoid the need for the boilerplate 32-bit
fallback code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/ata/pdc_adma.c | 23 ++++-------------------
 1 file changed, 4 insertions(+), 19 deletions(-)
diff mbox series

Patch

diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c
index 52fa8606a25f..965727af569b 100644
--- a/drivers/ata/pdc_adma.c
+++ b/drivers/ata/pdc_adma.c
@@ -573,23 +573,6 @@  static void adma_host_init(struct ata_host *host, unsigned int chip_id)
 		adma_reset_engine(host->ports[port_no]);
 }
 
-static int adma_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base)
-{
-	int rc;
-
-	rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
-	if (rc) {
-		dev_err(&pdev->dev, "32-bit DMA enable failed\n");
-		return rc;
-	}
-	rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
-	if (rc) {
-		dev_err(&pdev->dev, "32-bit consistent DMA enable failed\n");
-		return rc;
-	}
-	return 0;
-}
-
 static int adma_ata_init_one(struct pci_dev *pdev,
 			     const struct pci_device_id *ent)
 {
@@ -620,9 +603,11 @@  static int adma_ata_init_one(struct pci_dev *pdev,
 	host->iomap = pcim_iomap_table(pdev);
 	mmio_base = host->iomap[ADMA_MMIO_BAR];
 
-	rc = adma_set_dma_masks(pdev, mmio_base);
-	if (rc)
+	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (rc) {
+		dev_err(&pdev->dev, "32-bit DMA enable failed\n");
 		return rc;
+	}
 
 	for (port_no = 0; port_no < ADMA_PORTS; ++port_no) {
 		struct ata_port *ap = host->ports[port_no];