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| author | Leon Romanovsky <leonro@nvidia.com> | 2021-08-08 21:57:43 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-08-09 12:21:40 +0300 |
| commit | 919d13a7e455c2e7676042d7a5f94c164e859d8a (patch) | |
| tree | 0b272b82900d1a7760b3cb2838390fa54cbd9a69 /drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c | |
| parent | 94c0a6fbd5cfc34d3ce5fea5867123402cdc8794 (diff) | |
| download | linux-919d13a7e455c2e7676042d7a5f94c164e859d8a.tar.xz | |
devlink: Set device as early as possible
All kernel devlink implementations call to devlink_alloc() during
initialization routine for specific device which is used later as
a parent device for devlink_register().
Such late device assignment causes to the situation which requires us to
call to device_register() before setting other parameters, but that call
opens devlink to the world and makes accessible for the netlink users.
Any attempt to move devlink_register() to be the last call generates the
following error due to access to the devlink->dev pointer.
[ 8.758862] devlink_nl_param_fill+0x2e8/0xe50
[ 8.760305] devlink_param_notify+0x6d/0x180
[ 8.760435] __devlink_params_register+0x2f1/0x670
[ 8.760558] devlink_params_register+0x1e/0x20
The simple change of API to set devlink device in the devlink_alloc()
instead of devlink_register() fixes all this above and ensures that
prior to call to devlink_register() everything already set.
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c index 21a45279fd99..1e6061fb8ed4 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_devlink.c @@ -112,15 +112,16 @@ int hclgevf_devlink_init(struct hclgevf_dev *hdev) struct devlink *devlink; int ret; - devlink = devlink_alloc(&hclgevf_devlink_ops, - sizeof(struct hclgevf_devlink_priv)); + devlink = + devlink_alloc(&hclgevf_devlink_ops, + sizeof(struct hclgevf_devlink_priv), &pdev->dev); if (!devlink) return -ENOMEM; priv = devlink_priv(devlink); priv->hdev = hdev; - ret = devlink_register(devlink, &pdev->dev); + ret = devlink_register(devlink); if (ret) { dev_err(&pdev->dev, "failed to register devlink, ret = %d\n", ret); |