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| author | Longpeng(Mike) <longpeng2@huawei.com> | 2021-06-21 08:40:46 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-24 15:48:27 +0200 |
| commit | d874742f6a734c73c22235f9d56b8f10bcf17c5f (patch) | |
| tree | 82cad7bec9a625a1ad3d6a0c029ecd1ba861fe59 /drivers/virt | |
| parent | 1db376113e45e31eeeda6f91096808cf1827e70c (diff) | |
| download | linux-d874742f6a734c73c22235f9d56b8f10bcf17c5f.tar.gz linux-d874742f6a734c73c22235f9d56b8f10bcf17c5f.tar.bz2 linux-d874742f6a734c73c22235f9d56b8f10bcf17c5f.zip | |
nitro_enclaves: Set Bus Master for the NE PCI device
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 <andraprs@amazon.com>
Cc: Alexandru Vasile <lexnv@amazon.com>
Cc: Alexandru Ciobotaru <alcioa@amazon.com>
Reviewed-by: Andra Paraschiv <andraprs@amazon.com>
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Link: https://lore.kernel.org/r/20210621004046.1419-1-longpeng2@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/virt')
| -rw-r--r-- | drivers/virt/nitro_enclaves/ne_pci_dev.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/virt/nitro_enclaves/ne_pci_dev.c b/drivers/virt/nitro_enclaves/ne_pci_dev.c index b9c1de41e300..143207e9b969 100644 --- a/drivers/virt/nitro_enclaves/ne_pci_dev.c +++ b/drivers/virt/nitro_enclaves/ne_pci_dev.c @@ -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); |