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Groups > linux.kernel > #1483147
| From | Johannes Thumshirn <jthumshirn@suse.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 1/2] Enable PCI bus mastering by default |
| Date | 2016-09-14 12:10 +0200 |
| Message-ID | <shfiF-7ZI-17@gated-at.bofh.it> (permalink) |
| References | <shfiF-7ZI-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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
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[PATCH 0/2] MCB patches for v4.9 Johannes Thumshirn <jthumshirn@suse.de> - 2016-09-14 12:10 +0200 [PATCH 1/2] Enable PCI bus mastering by default Johannes Thumshirn <jthumshirn@suse.de> - 2016-09-14 12:10 +0200 [PATCH 2/2] Add a dma_device to mcb_device Johannes Thumshirn <jthumshirn@suse.de> - 2016-09-14 12:10 +0200
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