Vladimir Oltean c8cbe123be
net/sched: taprio: taprio_offload_config_changed() is protected by rtnl_mutex ...
The locking in taprio_offload_config_changed() is wrong (but also
inconsequentially so). The current_entry_lock does not serialize changes
to the admin and oper schedules, only to the current entry. In fact, the
rtnl_mutex does that, and that is taken at the time when taprio_change()
is called.
Replace the rcu_dereference_protected() method with the proper RCU
annotation, and drop the unnecessary spin lock.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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c8cbe123be