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nitro_enclaves: Set Bus Master for the NE PCI device

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Enable Bus Master for the NE PCI device, according to the PCI spec
for submitting memory or I/O requests:

 Master Enable – Controls the ability of a PCI Express
  Endpoint to issue Memory and I/O Read/Write Requests, and
  the ability of a Root or Switch Port to forward Memory and
  I/O Read/Write Requests in the Upstream direction

Cc: Andra Paraschiv <[email protected]>
Cc: Alexandru Vasile <[email protected]>
Cc: Alexandru Ciobotaru <[email protected]>
Reviewed-by: Andra Paraschiv <[email protected]>
Signed-off-by: Longpeng(Mike) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Longpeng(Mike) authored and Greg Kroah-Hartman committed 2021-06-24 15:48:27 +02:00
1 parent 1db376113e
commit d874742f6a
1 file changed
+2
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drivers/virt/nitro_enclaves/ne_pci_dev.c
+2
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@@ -480,6 +480,8 @@ static int ne_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto free_ne_pci_dev;
}
pci_set_master(pdev);
rc = pci_request_regions_exclusive(pdev, "nitro_enclaves");
if (rc < 0) {
dev_err(&pdev->dev, "Error in pci request regions [rc=%d]\n", rc);