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net: hns3: fix kernel crash when devlink reload during pf initialization

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The devlink reload process will access the hardware resources,
but the register operation is done before the hardware is initialized.
So, processing the devlink reload during initialization may lead to kernel
crash. This patch fixes this by taking devl_lock during initialization.

Fixes: b741269b27 ("net: hns3: add support for registering devlink for PF")
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Yonglong Liu 2024-03-25 20:43:10 +08:00 committed by Paolo Abeni
parent 47e39d213e
commit 93305b77ff
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
View file

@ -11626,6 +11626,8 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
if (ret)
goto err_pci_uninit;
devl_lock(hdev->devlink);
/* Firmware command queue initialize */
ret = hclge_comm_cmd_queue_init(hdev->pdev, &hdev->hw.hw);
if (ret)
@ -11805,6 +11807,7 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
hclge_task_schedule(hdev, round_jiffies_relative(HZ));
devl_unlock(hdev->devlink);
return 0;
err_mdiobus_unreg:
@ -11817,6 +11820,7 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
err_cmd_uninit:
hclge_comm_cmd_uninit(hdev->ae_dev, &hdev->hw.hw);
err_devlink_uninit:
devl_unlock(hdev->devlink);
hclge_devlink_uninit(hdev);
err_pci_uninit:
pcim_iounmap(pdev, hdev->hw.hw.io_base);