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net: ethernet: sync link status before removing

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The tegera_tvnet driver usually built as kernel
module, to avoid rmmod/insmod cause kernel crash
sync link status before rmmod

Bug 4456727
Bug 4451567

Change-Id: I2b7227fef36688777b8a468678be9e63a7638c2c
Signed-off-by: Jason Mei <jianjunm@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3079867
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Jason Mei
2024-02-20 09:49:01 +08:00
committed by mobile promotions
parent 3506076764
commit bba1f3a464
1 changed files with 30 additions and 3 deletions
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33
drivers/net/ethernet/nvidia/pcie/tegra_vnet.c
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@@ -1,6 +1,18 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2019-2023, NVIDIA CORPORATION. All rights reserved.
// SPDX-License-Identifier: GPL-2.0
/* SPDX-FileCopyrightText: Copyright (c) 2019-2024 NVIDIA CORPORATION & AFFILIATES.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <nvidia/conftest.h>
@@ -865,8 +877,23 @@ fail:
static void tvnet_host_remove(struct pci_dev *pdev)
{
int ret = -1;
struct tvnet_priv *tvnet = pci_get_drvdata(pdev);
if (tvnet->rx_link_state == DIR_LINK_STATE_UP)
tvnet_host_user_link_down_req(tvnet);
ret = wait_event_interruptible_timeout(tvnet->link_state_wq,
(tvnet->rx_link_state ==
DIR_LINK_STATE_DOWN),
msecs_to_jiffies(LINK_TIMEOUT));
ret = (ret > 0) ? 0 : -ETIMEDOUT;
if (ret < 0) {
pr_err("%s: failed: tx_state: %d rx_state: %d err: %d", __func__,
tvnet->tx_link_state, tvnet->rx_link_state, ret);
tvnet->rx_link_state = DIR_LINK_STATE_UP;
}
free_irq(pci_irq_vector(pdev, 0), tvnet->ndev);
free_irq(pci_irq_vector(pdev, 1), tvnet->ndev);
pci_free_irq_vectors(pdev);