sc16is7xx: move RTS delay to workqueue
Instead of spinning under port->lock let's just sleep inside the kthread. It should be equivalent as TX cannot proceed when thread is blocked. Signed-off-by: NJakub Kicinski <kubakici@wp.pl> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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