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From: "Longpeng(Mike)" <longpeng2@huawei.com>
To: <andraprs@amazon.com>, <lexnv@amazon.com>, <alcioa@amazon.com>
Cc: <longpeng2@huawei.com>, <arei.gonglei@huawei.com>,
	<linux-kernel@vger.kernel.org>
Subject: [PATCH] nitro_enclaves: set master in the procedure of NE probe
Date: Tue, 19 Jan 2021 11:30:59 +0800	[thread overview]
Message-ID: <20210119033059.1467-1-longpeng2@huawei.com> (raw)

According the PCI spec:
  Bus 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

Set BusMaster to make the driver to be PCI conformant.

Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
---
 drivers/virt/nitro_enclaves/ne_pci_dev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/virt/nitro_enclaves/ne_pci_dev.c b/drivers/virt/nitro_enclaves/ne_pci_dev.c
index b9c1de4..143207e 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);
-- 
1.8.3.1


             reply	other threads:[~2021-01-19  3:33 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-19  3:30 Longpeng(Mike) [this message]
2021-01-20 10:27 ` Paraschiv, Andra-Irina
2021-01-25  3:45   ` Longpeng (Mike, Cloud Infrastructure Service Product Dept.)

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