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USB: serial: f81232: drop time-based drain delay
The f81232 driver now waits for the transmit FIFO to drain during close
so there is no need to keep the time-based drain delay, which would add
up to two seconds on every close for low line speeds.
Fixes: 98405f8103
("USB: serial: f81232: add tx_empty function")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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@ -948,7 +948,6 @@ static int f81232_port_probe(struct usb_serial_port *port)
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usb_set_serial_port_data(port, priv);
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port->port.drain_delay = 256;
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priv->port = port;
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return 0;
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