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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 10:21:40 +0100 |
| commit | 919d13a7e455c2e7676042d7a5f94c164e859d8a (patch) | |
| tree | 0b272b82900d1a7760b3cb2838390fa54cbd9a69 /drivers/net/ethernet/mellanox/mlx5/core/devlink.c | |
| parent | 94c0a6fbd5cfc34d3ce5fea5867123402cdc8794 (diff) | |
| download | linux-919d13a7e455c2e7676042d7a5f94c164e859d8a.tar.gz linux-919d13a7e455c2e7676042d7a5f94c164e859d8a.tar.bz2 linux-919d13a7e455c2e7676042d7a5f94c164e859d8a.zip | |
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/mellanox/mlx5/core/devlink.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/devlink.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c index d791d351b489..f38553ff538b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c @@ -359,9 +359,10 @@ int mlx5_devlink_traps_get_action(struct mlx5_core_dev *dev, int trap_id, return 0; } -struct devlink *mlx5_devlink_alloc(void) +struct devlink *mlx5_devlink_alloc(struct device *dev) { - return devlink_alloc(&mlx5_devlink_ops, sizeof(struct mlx5_core_dev)); + return devlink_alloc(&mlx5_devlink_ops, sizeof(struct mlx5_core_dev), + dev); } void mlx5_devlink_free(struct devlink *devlink) @@ -638,11 +639,11 @@ static void mlx5_devlink_traps_unregister(struct devlink *devlink) ARRAY_SIZE(mlx5_trap_groups_arr)); } -int mlx5_devlink_register(struct devlink *devlink, struct device *dev) +int mlx5_devlink_register(struct devlink *devlink) { int err; - err = devlink_register(devlink, dev); + err = devlink_register(devlink); if (err) return err; |