From: Longpeng(Mike) Date: Mon, 21 Jun 2021 00:40:46 +0000 (+0800) Subject: nitro_enclaves: Set Bus Master for the NE PCI device X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d874742f6a734c73c22235f9d56b8f10bcf17c5f;p=linux.git 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 Cc: Alexandru Vasile Cc: Alexandru Ciobotaru Reviewed-by: Andra Paraschiv Signed-off-by: Longpeng(Mike) Link: https://lore.kernel.org/r/20210621004046.1419-1-longpeng2@huawei.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/virt/nitro_enclaves/ne_pci_dev.c b/drivers/virt/nitro_enclaves/ne_pci_dev.c index b9c1de41e300c..143207e9b9698 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);