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Date: Fri, 5 Jun 2020 08:25:37 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Mark Bloch <markb@...lanox.com>, Dexuan Cui <decui@...rosoft.com>, Moshe Shemesh <moshe@...lanox.com>, Saeed Mahameed <saeedm@...lanox.com>, Sasha Levin <sashal@...nel.org>, netdev@...r.kernel.org, linux-rdma@...r.kernel.org Subject: [PATCH AUTOSEL 5.4 11/14] net/mlx5: Fix crash upon suspend/resume From: Mark Bloch <markb@...lanox.com> [ Upstream commit 8fc3e29be9248048f449793502c15af329f35c6e ] Currently a Linux system with the mlx5 NIC always crashes upon hibernation - suspend/resume. Add basic callbacks so the NIC could be suspended and resumed. Fixes: 9603b61de1ee ("mlx5: Move pci device handling from mlx5_ib to mlx5_core") Tested-by: Dexuan Cui <decui@...rosoft.com> Signed-off-by: Mark Bloch <markb@...lanox.com> Reviewed-by: Moshe Shemesh <moshe@...lanox.com> Signed-off-by: Saeed Mahameed <saeedm@...lanox.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/net/ethernet/mellanox/mlx5/core/main.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 7dcdda9ca351..e4a690128b3a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -1554,6 +1554,22 @@ static void shutdown(struct pci_dev *pdev) mlx5_pci_disable_device(dev); } +static int mlx5_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct mlx5_core_dev *dev = pci_get_drvdata(pdev); + + mlx5_unload_one(dev, false); + + return 0; +} + +static int mlx5_resume(struct pci_dev *pdev) +{ + struct mlx5_core_dev *dev = pci_get_drvdata(pdev); + + return mlx5_load_one(dev, false); +} + static const struct pci_device_id mlx5_core_pci_table[] = { { PCI_VDEVICE(MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTIB) }, { PCI_VDEVICE(MELLANOX, 0x1012), MLX5_PCI_DEV_IS_VF}, /* Connect-IB VF */ @@ -1597,6 +1613,8 @@ static struct pci_driver mlx5_core_driver = { .id_table = mlx5_core_pci_table, .probe = init_one, .remove = remove_one, + .suspend = mlx5_suspend, + .resume = mlx5_resume, .shutdown = shutdown, .err_handler = &mlx5_err_handler, .sriov_configure = mlx5_core_sriov_configure, -- 2.25.1
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