[PATCH 01/32] net: pasemi: set a 64-bit DMA mask on the DMA device

From: Christoph Hellwig
Date: Wed Feb 13 2019 - 02:02:11 EST


The pasemi driver never set a DMA mask, and given that the powerpc
DMA mapping routines never check it this worked ok so far. But the
generic dma-direct code which I plan to switch on for powerpc checks
the DMA mask and fails unsupported mapping requests, so we need to
make sure the proper 64-bit mask is set.

Reported-by: Christian Zigotzky <chzigotzky@xxxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Tested-by: Christian Zigotzky <chzigotzky@xxxxxxxxxxx>
---
drivers/net/ethernet/pasemi/pasemi_mac.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/pasemi/pasemi_mac.c b/drivers/net/ethernet/pasemi/pasemi_mac.c
index d21041554507..a5bf46310f60 100644
--- a/drivers/net/ethernet/pasemi/pasemi_mac.c
+++ b/drivers/net/ethernet/pasemi/pasemi_mac.c
@@ -1716,6 +1716,7 @@ pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
err = -ENODEV;
goto out;
}
+ dma_set_mask(&mac->dma_pdev->dev, DMA_BIT_MASK(64));

mac->iob_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa001, NULL);
if (!mac->iob_pdev) {
--
2.20.1