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authorLongpeng(Mike) <longpeng2@huawei.com>2021-06-21 08:40:46 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-06-24 15:48:27 +0200
commitd874742f6a734c73c22235f9d56b8f10bcf17c5f (patch)
tree82cad7bec9a625a1ad3d6a0c029ecd1ba861fe59 /drivers/virt
parent1db376113e45e31eeeda6f91096808cf1827e70c (diff)
downloadlinux-d874742f6a734c73c22235f9d56b8f10bcf17c5f.tar.bz2
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.c2
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);