Re: [PATCH net-next V3 2/3] net/mlx5: Add support for enabling PTM PCI capability

[Wojciech Drewek <wojciech.drewek@intel.com>]

On 30.07.2024 15:40, Tariq Toukan wrote:
> From: Carolina Jubran <cjubran@nvidia.com>
> 
> Since the kernel doesn't support enabling Precision Time Measurement
> for an endpoint device, enable the PTM PCI capability in the driver.
> 
> Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
> Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
> ---

Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>

>  drivers/net/ethernet/mellanox/mlx5/core/main.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
> index 527da58c7953..780078bd5b8c 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
> @@ -923,6 +923,11 @@ static int mlx5_pci_init(struct mlx5_core_dev *dev, struct pci_dev *pdev,
>  	}
>  
>  	mlx5_pci_vsc_init(dev);
> +
> +	err = pci_enable_ptm(pdev, NULL);
> +	if (err)
> +		mlx5_core_info(dev, "PTM is not supported by PCIe\n");
> +
>  	return 0;
>  
>  err_clr_master:
> @@ -939,6 +944,7 @@ static void mlx5_pci_close(struct mlx5_core_dev *dev)
>  	 * before removing the pci bars
>  	 */
>  	mlx5_drain_health_wq(dev);
> +	pci_disable_ptm(dev->pdev);
>  	iounmap(dev->iseg);
>  	release_bar(dev->pdev);
>  	mlx5_pci_disable_device(dev);