net: devlink: remove redundant rtnl lock assert
It is enough for caller of devlink_compat_switch_id_get() to hold the net device to guarantee that devlink port is not destroyed concurrently. Remove rtnl lock assertion and modify comment to warn user that they must hold either rtnl lock or reference to net device. This is necessary to accommodate future implementation of rtnl-unlocked TC offloads driver callbacks. Signed-off-by: NVlad Buslov <vladbu@mellanox.com> Acked-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
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