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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/huawei/hinic/hinic_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/huawei/hinic/hinic_devlink.c')
| -rw-r--r-- | drivers/net/ethernet/huawei/hinic/hinic_devlink.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_devlink.c b/drivers/net/ethernet/huawei/hinic/hinic_devlink.c index 58d5646444b0..6e11ee339f12 100644 --- a/drivers/net/ethernet/huawei/hinic/hinic_devlink.c +++ b/drivers/net/ethernet/huawei/hinic/hinic_devlink.c @@ -293,9 +293,9 @@ static const struct devlink_ops hinic_devlink_ops = { .flash_update = hinic_devlink_flash_update, }; -struct devlink *hinic_devlink_alloc(void) +struct devlink *hinic_devlink_alloc(struct device *dev) { - return devlink_alloc(&hinic_devlink_ops, sizeof(struct hinic_dev)); + return devlink_alloc(&hinic_devlink_ops, sizeof(struct hinic_dev), dev); } void hinic_devlink_free(struct devlink *devlink) @@ -303,11 +303,11 @@ void hinic_devlink_free(struct devlink *devlink) devlink_free(devlink); } -int hinic_devlink_register(struct hinic_devlink_priv *priv, struct device *dev) +int hinic_devlink_register(struct hinic_devlink_priv *priv) { struct devlink *devlink = priv_to_devlink(priv); - return devlink_register(devlink, dev); + return devlink_register(devlink); } void hinic_devlink_unregister(struct hinic_devlink_priv *priv) |