[PATCH 1/2] Enable PCI bus mastering by default

Johannes Thumshirn
2016-09-14T10:05:38Z

From: Michael Moese <michael.moese@men.de>

In order to successfully perform DMA operations on PCI devices,
it is necessary to enble PCI bus mastering, so enable it by default.

Signed-off-by: Michael Moese <michael.moese@men.de>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
---
drivers/mcb/mcb-pci.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/mcb/mcb-pci.c b/drivers/mcb/mcb-pci.c
index b15a034..af4d2f2 100644
--- a/drivers/mcb/mcb-pci.c
+++ b/drivers/mcb/mcb-pci.c
@@ -46,6 +46,7 @@ static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
dev_err(&pdev->dev, "Failed to enable PCI device\n");
return -ENODEV;
}
+ pci_set_master(pdev);

priv->mapbase = pci_resource_start(pdev, 0);
if (!priv->mapbase) {
--
1.8.5.6