The Coverity checker (and Adrian Bunk) spotted an inconsistent NULL check of
port->tty (it's blindly dereferenced later without the check).
Alan Cox confirmed the check can go.
Signed-off-by: Ray Lee <ray-lk@madrabbit.org>
Cc: Adrian Bunk <bunk@kernel.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
        if (edge_port == NULL)
                return -ENODEV;
 
-       if (port->tty)
-               port->tty->low_latency = low_latency;
+       port->tty->low_latency = low_latency;
 
        port_number = port->number - port->serial->minor;
        switch (port_number) {