On Tue, Sep 01, 2020 at 05:59:45PM +0200, Andrew Lunn wrote: > Maybe, at the moment, RTNL is keeping things atomic. But that is > because there is no HWMON, or MDIO bus. Those sort of operations don't > take the RTNL, and so would be an issue. I've also never audited the > network stack to check RTNL really is held at all the network stack > entry points to a DSA driver. It would be an interesting excesses to > scatter some ASSERT_RTNL() in a DSA driver and see what happens.
Device drivers really aught to protect their state and their devices' state from concurrent access. Thanks, Richard
