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devlink: take device reference for devlink object

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In preparation to allow to access device pointer without devlink
instance lock held, make sure the device pointer is usable until
devlink_release() is called.

Fixes: c137743bce ("devlink: introduce object and nested devlink relationship infra")
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2023-10-13 14:10:25 +02:00 committed by David S. Miller
parent c503bc7df6
commit a380687200
1 changed files with 2 additions and 1 deletions
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3
net/devlink/core.c
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@ -310,6 +310,7 @@ static void devlink_release(struct work_struct *work)
mutex_destroy(&devlink->lock);
lockdep_unregister_key(&devlink->lock_key);
put_device(devlink->dev);
kfree(devlink);
}
@ -425,7 +426,7 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
if (ret < 0)
goto err_xa_alloc;
devlink->dev = dev;
devlink->dev = get_device(dev);
devlink->ops = ops;
xa_init_flags(&devlink->ports, XA_FLAGS_ALLOC);
xa_init_flags(&devlink->params, XA_FLAGS_ALLOC);