netdev - [PATCH next-queue v2 2/3] igc: Enable PCIe PTM

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Message-Id: <20201110061019.519589-3-vinicius.gomes@intel.com>
Date:   Mon,  9 Nov 2020 22:10:18 -0800
From:   Vinicius Costa Gomes <vinicius.gomes@...el.com>
To:     intel-wired-lan@...ts.osuosl.org
Cc:     Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        sasha.neftin@...el.com, andre.guedes@...el.com,
        anthony.l.nguyen@...el.com, linux-pci@...r.kernel.org,
        bhelgaas@...gle.com, netdev@...r.kernel.org
Subject: [PATCH next-queue v2 2/3] igc: Enable PCIe PTM

In practice, enabling PTM also sets the enabled_ptm flag in the PCI
device, the flag will be used for detecting if PTM is enabled before
adding support for the SYSOFFSET_PRECISE ioctl() (which is added by
implementing the getcrosststamp() PTP function).

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@...el.com>
---
 drivers/net/ethernet/intel/igc/igc_main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 9112dff075cf..cb4ffa90230c 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -10,6 +10,7 @@
 #include <linux/ip.h>
 #include <linux/pm_runtime.h>
 #include <net/pkt_sched.h>
+#include <linux/pci.h>
 
 #include <net/ipv6.h>
 
@@ -5017,6 +5018,10 @@ static int igc_probe(struct pci_dev *pdev,
 
 	pci_enable_pcie_error_reporting(pdev);
 
+	err = pci_enable_ptm(pdev, NULL);
+	if (err < 0)
+		dev_err(&pdev->dev, "PTM not supported\n");
+
 	pci_set_master(pdev);
 
 	err = -ENOMEM;
-- 
2.29.0